Unfortunately, sometimes you can find quite serious problems with turning on computers and starting operating systems, although until a certain moment, there was no sign of trouble. It happens that, but most often the computer turns on, but the operating system does not start. It is these situations that will be discussed further. Consider questions related to why the computer does not boot, and what to do in such situations. There are several universal solutions here.
The computer turns on, but the operating system does not start: reasons
Among all the possible situations where failures occur at the boot stage, several typical cases can be distinguished.
There are three options here:
- a black screen appears;
- a BSoD blue screen occurs;
- the operating system starts but cannot fully load.
In the first case, when the computer does not start (boot does not turn on), messages may appear on a black screen indicating physical or software problems. In the simplest case, when nothing serious is happening, the system may report that, for example, there is no keyboard (for stationary PCs). The simplest solution is to connect it and reboot.
If the computer turns on, but the boot does not start, and instead warnings about software failures or missing files appear on a black screen, there can be a lot of reasons for this system behavior. Among them, first of all, one can single out problems with the hard drive, damage to the operating system (accidental or deliberate removal of system components or registry entries), exposure to viruses, incorrect boot sector entries, RAM conflicts, etc. By the way, if a blue screen pops up, this is more related to the "RAM" or recently installed device drivers, which cause conflicts not at the software level, but at the physical level.
What if the computer does not boot and the operating system does not start for the above reasons? There are several solutions depending on the situation. To an uninitiated user, they may seem rather complicated, but in certain situations, only they can be used to reanimate the system. Therefore, you will have to spend both time and effort.
My computer turns on but won't boot: what should I do first?
So let's start with the simplest. Suppose that a short-term technical failure has occurred in the system, for example, due to improper shutdown or power surges.
As a rule, almost all Windows modifications used today usually automatically activate startup upon restart. If this has not happened, you will have to use the F8 key before starting the system to invoke an additional boot menu (in Windows 10, a different method is used).
The computer turns on but the operating system does not start? You shouldn't be upset. Here, in the simplest version, you can select the boot line for the last working configuration. If everything is in order with the system components, the system will boot without problems. If that doesn't work, you'll have to use the troubleshooting section, and sometimes even trying to boot into Safe Mode may be successful.
Possible viral infection
Unfortunately, viruses can also cause such situations to appear. What if my computer won't turn on? Ways to solve this particular problem boil down to using a powerful one that could check for threats even before starting the OS itself.
Among the variety of antivirus software, it is worth mentioning separately disk utilities that start directly from an optical media or USB-device, have their own boot records and even a graphical interface like Windows. One of the most powerful tools is Kaspersky Rescue Disk. Its use can guarantee almost one hundred percent detection of viruses, even those hidden in RAM.
RAM conflicts
Now let's see what to do if the computer does not boot and a blue screen appears instead. As already mentioned, this most often indicates problems with drivers and RAM. We are not touching the drivers yet, but let's take a look at the "RAM".
The proposed solution to the issue of if the computer does not boot is mainly designed for stationary PCs. In this situation, you should remove all memory strips, and then insert them one by one and check the load. Perhaps one of them is the link that causes the failures. This can be observed when trims from different manufacturers are added.
If the system is able to somehow boot using the same safe mode, the "RAM" should immediately be checked with the Memtest86 + utility, which will help to identify the true cause of the problem.
The system does not see the hard drive
Now the worst situation is when the computer does not boot. The causes and remedies may be related to the hard drive.
Winchester can have both software and physical problems, although sometimes this is not even the case. The problem can be completely trivial: the user in the BIOS settings has the priority of booting from a removable device, for example, from an optical disk, which is currently in the drive, but is not the system one. It should simply be removed and reloaded.
On the other hand, another problem that the computer does not start (system start does not turn on) may be due to the fact that the bootloader and the corresponding sector records are damaged. The solution to this situation will be discussed a little later. But in the simplest case, you can try to recover disk data using Recovery utilities.
Sometimes changing the settings of the primary input / output system BIOS also helps. Here you need to find the section related to configuring the hard drive, and deactivate the use of the AHCI mode in the SATA configuration parameters.
Finally, the hard drive can have purely physical damage, and here you cannot do without outside interference.
Using the installation disc
Many users clearly underestimate the help that the installation or system image can provide in solving problems associated with situations when the computer turns on, but the operating system does not load.
Firstly, almost any kit includes a so-called recovery console, with which you can eliminate many software failures, and secondly, you can use the command line here. This, by the way, is the most effective method. It will be clear below how this works.
Problems with the BOOTMGR bootloader
It is believed that the most common problem when a computer turns on but the operating system does not start is a damaged Windows boot manager (Boot Manager). In this case, the system just writes that there is no system partition (it simply does not see the hard drive).
You can fix this problem if you start from the boot disk and go to the command line in the recovery console, to call which you should press the "R" key. Next, you must first use the check disk command, and then fix (restore) the boot records.
The whole sequence looks like this:
- chkdsk c: / f / r;
- Bootrec.exe / FixMbr;
- Bootrec.exe / FixBoot.
After entering commands, no punctuation marks are put, but the enter key is pressed. If, for some reason, the execution of these commands did not have a positive effect, as an option, you can use a complete rewriting of the boot sector, which is performed by the Bootrec.exe / RebuildBcd command. If the hard drive is not physically damaged, this should work, as they say, one hundred percent.
Some third-party utilities can also be used. The most suitable program seems to be a tool called MbrFix, which is included in the Hiren's Boot CD. After calling it, for example, for Windows 7, provided that this particular system is installed, and only on one disk (there is no partitioning into partitions), the following should be written:
- MbrFix.exe / drive 0 fixmbr / win7.
This saves the user from having to make changes to the boot records, and the boot will be restored.
Problems accessing the NTLDR file
When a message appears that this component is not present in the system, the boot commit is applied first, as in the previous case.
However, if the result is not achieved, you will need to copy the original file to the root of the system partition. For example, if the drive is "C" and the drive is "E", the command will look like this:
- E: \ i386> copy ntldr C: \ (after copying the system will boot without problems).
Corrupted or missing HAL.dll file
In the case when the computer turns on, but the operating system does not load in normal mode, the reason may be a damaged HAL.dll component (a corresponding notification may be displayed on the screen).
In this situation, you need to boot the system in safe mode, call the command console and write the following line in it:
- C: \ windows \ system32 \ restore \ rstrui.exe (then press Enter and restart).
Instead of a total
That is, in short, everything related to solving the problem of the inability to start the operating system. Naturally, the questions were not raised here that the reason could be low power supply, CMOS battery failure, loose loops, dust inside the system unit or other malfunctions. But in software terms, the above methods work flawlessly.
On this page I will try to collect all known solutions to the problem when pages are not fully loaded in the browser. Websites do not open completely. For example, some images or scripts on websites are not loaded. Pages are crooked in the browser, or only part of the site is loading. And some sites don't open at all. Or they open, but not from the first time, but from the second, or third. We will consider solutions for Windows 10, 8, 7. Simply put, for computers. If you encounter such a problem on a mobile device, then most likely the reason is in the router. (if you are connected through it)... I will write about this in more detail in the article. This is how it all looks roughly.
I myself have encountered a problem several times when my browser did not open the sites completely. For example, pictures were not loaded on VK. This also happens on Odnoklassniki and other social networks. I don't remember exactly, but my solution was simple: clear the cache, restart the browser. There are also more serious reasons. For example, the MTU value is incorrect. This parameter can be changed in the router settings, or in Windows itself.
The most common reasons:
- Browser glitch. As a rule, restarting the browser, restarting the computer, clearing the browser cache helps.
- Problem with add-ons in browsers. Sometimes, some add-ons installed in the browser prevent the page from loading completely. The most common culprit for this are add-ons that block ads on sites.
- Incorrect MTU value. We will not understand what it is and how it affects the loading of sites, but very often because of it, sites either do not load at all, or do not load completely. As I wrote above, MTU can be changed in the router settings. (if the Internet is connected directly, then in the Windows settings)... Usually there is a value of 1500. After installing 1460, everything starts to open normally. But there is no guarantee that MTU is the problem in your case.
- Viruses and malware. I am sure that some viruses can prevent browsers from displaying pages normally.
I want to note that such problems with the "crooked" display of sites can be observed in all browsers: Firefox, Opera, Chrome, Yandex Browser, Microsoft Edge and even Internet Explorer. Which, and without any problems, can load sites incompletely, or crookedly π
Websites do not open completely: the first solution and search for the reason
For starters, I advise close the browser and restart the computer, or laptop. Maybe everything will work fine. If you connect to the Internet via a router or modem, then you can also restart it. It definitely won't hurt.
Since nowadays a router is almost always installed, and all devices will connect to the Internet through it, then check how sites open on other devices. You can check even on Android or iOS smartphones and tablets. But it's better, it's over, on the computer. If possible, connect your computer to a different internet. For example, to another Wi-Fi network, which can be shared even from the phone.
Check how everything works through another browser. Even the standard one. Remember, maybe you installed some add-ons or programs before.
So we can understand what is the cause of our problem, and where to go next. You can describe the result of these checks and reflections in the comments. I will try to help.
Clearing the browser cache
This is one of the first solutions to try when this kind of problem appears. I am planning a separate article on this topic, but here I will briefly show you how to clear the cache in the most popular browsers.
If you have some other browser, then I think that you can easily find the function of clearing the cache in the settings. Or ask in the comments.
Checking browser add-ons installed
If clearing the cache did not help, and the page in the browser still does not open completely, then I recommend checking the installed add-ons and temporarily disabling them (if any).
You can also do this in the browser settings, somewhere in the "Extensions", "Add-ons" section. For example, in the Opera browser:
Disable all installed extensions temporarily.
If you do not know where these settings are located in your browser, then see the article. In it, I showed you how to manage extensions in popular browsers.
Also see what programs you have installed and running on your computer. You may find something suspicious.
MTU and problems with incomplete loading of sites
I already talked about this parameter above in the article. As a rule, it is changed in the router settings. Very often, due to an incorrect MTU value, there are problems with displaying pages when connecting to the Internet via 3G / 4G modems. When the modem is connected to the router. But this also happens with a cable connection.
You can change MTU in the router settings, in the section with the Internet connection settings: "WAN", "Internet".
I'll show you how to change MTU on some routers.
In the WAN section there is an item "MTU Size". By default, there is 1500. You can register 1460, or even 1400.
If you have PPPoE, then you need to click on the "Advanced" button and change the value there.
Save the settings and reboot the router.
In the "Internet" section. MTU field.
I cannot show in detail how to do this on routers from different manufacturers. Therefore, if you do not find these settings, write in the comments.
Checking for viruses and more ...
If all else fails, then it will not be superfluous to check your computer for viruses. You can run a scan in the antivirus (if installed), or check the system with one of the free antivirus utilities. For example, Dr.Web CureIt !.
If, when connecting to another Internet (Wi-Fi network), the sites are loaded the first time and completely, then it makes sense to call the provider's support and explain the problem. Maybe they have some kind of problem.
You can also try on Google Public DNS.
I told everything I know on this topic at the moment. If there is new information, I will definitely add it. You can also share your observations and advice. Best wishes!
Many netizens, whose browser selectively or completely blocks Internet resources, begin to wonder why the site does not open. There are several reasons why some pages or sites do not load:
- Malicious software;
- Changing parameters in the registry;
- Change the browser shortcut;
- DNS server problem;
- Changes to the hosts text file.
Malicious software
Viruses, due to which the browser denies access to various resources, work as follows: they redirect the user not to the original site, but to the phishing one.
A phishing site is an Internet resource developed by cybercriminals to steal personal data for use or sale.
In appearance, these pages do not differ from the original ones, but the main difference is the link.
Fortunately, such a virus can be easily removed, since in most cases it is registered in the hosts file. This system resource can be opened with notepad and edited as you see fit.
Editing the hosts file
Hosts is a document containing information about domains and IP addresses. Many viruses like to be registered here and cause some sites not to open. You can find the file at A:\ Windows\ System32\ Driver\ etc\ hosts, where A is the drive letter on which Windows is installed.
The document is opened using an ordinary notepad or WordPad. The "healthy" hosts looks like this:
And this is how the infected document looks like:
Anything that falls under the "garbage" category must be removed and the modified hosts must be saved. After restarting the computer, access to Internet resources will reopen, so some sites that have not been launched before will be loaded.
But there are also smarter viruses that not only change, but also modify the hosts, so sites do not load. In this case, editing is somewhat more difficult. The most common two versions of the problem are:
- There are two identical documents in the folder at the above path . In this case, you need to pay attention to the file extension. Fake hosts has the extension .txt, when the original cannot have it.
- Document missing . This means that the virus has made the file hidden.
In order to make hosts visible again, you must:
- Expand the folder ribbon;
- Go to the "View" section;
- In the Show or Hide category, check the box next to hidden items:
After the completion of setting the parameters, a hidden document should appear in the folder. The file may appear transparent.
If the user does not want to torment himself by editing the hosts, then the file can simply be deleted. The Windows operating system will automatically restore the lost system document to its original state.
Sometimes a list with third-party addresses may not be at the beginning, but at the end of a text document. After opening hosts, be sure to scroll through it to the end.
Virus search
Just editing the text file is not enough - you need to find the source of the problem, why the pages stopped opening in the browser. Any modern antivirus, be it Avast, Doctor Web, or even online services, can handle the search for malicious software on a personal computer. You just need to enable deep analysis.
After the virus has been detected and removed, it is necessary to clear the browser cache.
DNS Server Problems
Another common reason why some sites won't open is DNS related glitches. To fix this problem you need to:
- Go to the Internet section on the control panel;
- Go to network management;
- Open the properties and in the "Network" section start the fourth Internet protocol;
- Find strings with DNS address. Just in case, copy them to a notepad;
- In the same fields, enter the values: 8.8.8.8 and 8.8.4.4;
- Save modified parameters.
Sometimes such changes lead to the fact that some of the sites provided by the provider do not load.
Registry problems
Registry problems are usually also caused by malware. To clean it, follow the instructions:
- We call the line "Run" using the combination Win + R. In the window, we drive in the regedit command and click "OK":
- In a new registry window, follow the link
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Windows;
- We are looking for the Applnit_DLLs section. This string should not have any parameters specified. If there are third-party labels, then we erase and save the accepted changes.
There is also an alternative way to clean up the registry - CCleaner.
CCleaner is a free application designed to optimize Windows operating systems.
The program is quite simple to use and allows you to fix the problems why pages on the Internet do not load in a few clicks:
- Install and run the program on the computer;
- Go to the registry key;
- A list of possible problems has appeared in a new window. We put a checkmark in front of everyone;
- The PC scan procedure will start. It lasts 5-10 minutes. After the problem is found, click on the fix icon.
Clearing the DNS cache
It is not uncommon for some sites on the network to stop working due to cache problems. In this case, regular cleaning will help. For this:
- We start the executing window and drive in cmd, which initiates the launch of the console;
- We drive in three commands in turn:
- Ipconfig / flushdns;
- Ipconfig / registerdns;
- Netsh winsock reset.
- After such commands, the cache will be cleared. The user only needs to restart his personal computer and try again to visit the site that was previously inaccessible.
Shortcut changes
Another unpleasant thing that viruses can do is to add extra notes to the browser shortcut. For this reason, the browser will send the user to unwanted resources or block sites altogether.
The problem is solved quite simply:
- With the right button of the manipulator, click on the browser shortcut;
- Go to the properties section;
- We look at the line "Object". In a normal state, it looks like this:
A:\User\AppData\ Local\Browser\Application\browser.exe
- If there are third-party labels, then simply delete them, saving the changes.
Proxy server problems
Due to the activity of malicious software on a personal computer, the proxy server settings may change. Reconfiguring the utility will help solve the problem. As an example, let's analyze the well-known Opera browser, but the principle of changing the settings is similar to all other browsers:
- Launch the browser and go to the settings section by pressing Alt + P;
- In the "Browser" tab, look for the network section and click "Change proxy server settings":
- A window with Internet properties will pop up. Click "Network Settings":
- If the user is not using any proxy servers, then the normal default setting looks like this:
- If the proxy server is set manually, but the owner is sure that he did not do it, then malicious software is operating on the computer. It must be found and neutralized using any anti-virus application.
What to do if it doesn't open a specific site
It often happens that all Internet resources work fine, but the browser does not open a specific page. However, changing the browser has no effect. At first glance, it may seem that these are problems on the site or technical work is underway, but after launching the mobile version of the browser, the page opens.
To solve the problem, the page compression mode is used. To do this, in the Opera browser, open the menu section and look for the compression mode in the line:
In older versions, this feature was called Opera turbo. The essence of its work lies in the fact that in this mode the user goes to the site through special proxy servers. If the problem persists, then it is likely that the site is down for technical reasons.
Another reason why the site does not open may be ban externalIP-addresses from the hosting resource. This is not the user's fault, since the hosting provides an automatic function to block addresses that were used for the DDOS attack. In this case, it is enough to wait for the unban. It takes from a week to a month.
Why are sites not opening? (video)
After the browser is working again, the user should try to avoid new encounters with malicious software. Fortunately, this is done quite simply with the help of modern antiviruses. If it was not possible to restore access to Internet resources, then do not forget about the service centers, where specialists will diagnose, identify the problem and solve it, restoring the browser to work.
Sometimes computer users can face unpleasant situations when something does not work for reasons unknown to them. A common situation when there seems to be the Internet, but the pages in the browser still do not open. Let's see how to fix this problem.
If the site does not start in the browser, then it is immediately visible - a similar inscription appears in the center of the page: "The page is not available", "Unable to access the site" etc. This situation can happen for the following reasons: lack of Internet connection, problems in the computer or in the browser itself, etc. To eliminate such problems, you can check your PC for viruses, make changes in the registry, hosts file, DNS server, and also pay attention to browser extensions.
Method 1: check your internet connection
A banal, but very common reason that pages do not load in the browser. The first thing to do is check your internet connection. An easy way would be to launch any other installed browser. If the pages in any web browser start, then there is an Internet connection.
Sometimes the system crashes, leading to the closure of the necessary browser processes. To resolve this problem, it will be enough to restart the computer.
Method 3: checking the shortcut
Many people start their browser from a shortcut on the desktop. However, it has been noticed that viruses can spoof labels. The next lesson shows you how to replace an old shortcut with a new one.
Method 4: check for malware
A common reason for the incorrect operation of the browser is the action of viruses. You need to conduct a full scan of your computer using antivirus or a special program. How to scan your computer for viruses is described in detail in the next article.
Method 5: cleaning extensions
Viruses can replace installed extensions in the browser. Therefore, a good solution to the problem would be to remove all add-ons and reinstall only the most necessary ones. Further steps will be shown using Google Chrome as an example.
Method 6: using automatic parameter detection
You can also configure the proxy server settings in the browser itself. For example, in Google Chrome, Opera and Yandex Browser, the actions will be almost the same.
In Mozilla Firefox browser
In Internet Explorer, do the following:
Method 7: check the registry
If the above options did not help to solve the problem, then you should make changes in the registry, since viruses can be registered in it. On licensed Windows, the value of the entry "Appinit_DLLs" should usually be empty. If not, then it is likely that a virus is registered in its parameter.
Method 8: changes in the hosts file
Method 9: change the DNS server address
Method 10: changes in the DNS server
So we examined the main options for actions when the pages in the browser do not open, but the Internet is there. We hope your problem has now been resolved.
It often happens that the browser cannot open some specific site, which was previously available for viewing. At the same time, he perfectly opens the pages of other sites and the user does not experience any difficulties - everything is normal. It would seem that - the server simply does not work - the site was turned off. But here's the bad luck, if suddenly you go to the same site, for example, from a mobile device via Opera Mobile and the site opens perfectly in it.
If the described situation is familiar to you, then I will try to answer the question: why a particular site is not accessible from your computer.
For example, here is the standard error that is displayed in the browser. Google chrome: Β« Sorry, Google Chrome cannot open the page blah blah blahβ¦Β«:
First of all, if you are faced with a similar problem, you do not need to immediately follow the advice to clear the cache and remove coockies, because if you do this, you will have to re-enter the password in Classmates, remember password In contact withπ First, try accessing the page from other browsers, such as Firefox, IE, Opera... If the reaction to the site is the same in all browsers, then try the following: go to Opera, click on the button of the same name in the upper left corner and select "Compression Mode".
This function used to be called Opera Turbo... An important feature of this mode for us is that the site is opened through proxy server, that is proxy server between you and the requested site. If, when you try to open the site in this mode, the same thing happens - the page does not open, then the site is really faulty or out of maintenance. It is quite possible that after a while it will be turned on.
But if the site is still open, then we will try to narrow the circle of "suspects". I must say right away: if you cannot access the sites of antivirus software, Microsoft, then this is a 200% virus that blocks access. Here, from personal experience, I will say that only reinstalling the system will help.
Go to the folder C: \ Windows \ System32 \ Drivers \ etc and find the file there hosts... Open it with a regular notepad and check if there are any entries regarding your site in the following format:
Such entries block access to the site and are caused by spyware and viruses. Just sting the lines with regards to your site, save the file to the Desktop (be sure to select the "All files *. *" File type when saving) and copy it back to C: \ Windows \ System32 \ Drivers \ etc. Restart your computer and enjoy your life.
If no suspicious entries were found in the specified file, then we are dealing with a completely different reason - BANOM Your his external IP address(or address range) website hosting... It's not your fault here - it so happens that the hosting blocks the addresses from which attempts were made hacking, DDOS attacks... Just wait for the IP to be unbanned - it will take about a week.
There is also a simple routing error. A similar problem is solved within a day or two.