Unfortunately, sometimes you can encounter quite serious problems with turning on computers and starting operating systems, although until a certain point there were no signs of trouble. It happens that most often the computer turns on, but the operating system does not start. It is these situations that will be discussed further. Let's look at questions related to why the computer won't 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 when failures occur at the loading stage, several typical cases can be identified.

There are three options:

• a black screen appears;
• Blue screen BSoD occurs;
• The operating system starts, but cannot fully boot.

In the first case, when the computer does not start (the boot does not turn on), messages may appear on a black screen indicating physical or software problems. In the simplest case, when nothing serious happens, the system may report that, for example, the keyboard is missing (for desktop 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 many reasons for this system behavior. Among them, first of all, we can highlight problems with the hard drive, damage to the operating system (accidental or intentional deletion 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 mostly applies to the RAM or recently installed device drivers, which cause conflicts not at the software level, but at the physical level.

What to do if the computer does not boot and the operating system does not start for the above reasons? Depending on the situation, there are several solutions. To an uninitiated user, they may seem quite complicated, but in certain situations only they can be used to resuscitate the system. Therefore, you will have to spend both time and effort.

The computer turns on but does not boot: what to do first?

So, let's start with the simplest thing. Let's assume that a short-term technical failure has occurred in the system, for example due to incorrect shutdown or power surges.

As a rule, almost all Windows modifications used today usually automatically activate startup upon restart. If this does not happen, before starting the system you will have to use the F8 key to call up the additional boot menu (Windows 10 uses a different method).

The computer turns on, but the operating system does not start? There's no need to get upset. Here, in the simplest version, you can select the line to load the last working configuration. If everything is in order with the system components, the system will boot without problems. If this does not help, you will 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. What to do if the computer does not turn on? Ways to solve this particular problem boil down to using a powerful one that could check for threats even before the OS itself starts.

Among the variety of anti-virus software, it is worth noting specially 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 hiding in RAM.

RAM conflicts

Now let's see what to do if the computer does not boot and instead a blue screen appears. As already mentioned, most often this indicates problems with drivers and RAM. We’re not touching the drivers yet, but let’s 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 sticks, and then insert them one by one and check the load. Perhaps one of them is the link that causes failures. This may occur when trims from different manufacturers are added.

If the system can somehow be loaded using the same safe mode, the RAM should immediately be checked using the Memtest86+ utility, which will help 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 solutions may be related to the hard drive.

A hard drive can have both software and physical problems, although sometimes that’s not even the issue. The problem may be completely trivial: the user in the BIOS settings has set the priority for booting from a removable device, for example, from an optical disk, which is currently in the drive, but is not a system one. You just need to remove it and download again.

On the other hand, another problem that the computer does not start (the system does not start) may be due to the fact that the bootloader and the records of the corresponding sector are damaged. The solution to this situation will be discussed a little later. But in the simplest case, you can try to restore disk data using Recovery utilities.

Sometimes changing the settings of the primary BIOS input/output system also helps. Here you need to find the section related to setting up the hard drive, and in the SATA configuration parameters, deactivate the use of AHCI mode.

Finally, the hard drive may also have purely physical damage, and this cannot be done without outside intervention.

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. Next it will be clear how this works.

Problems with the BOOTMGR bootloader

It is believed that the most common problem when the computer turns on, but the operating system does not start, is damage to the 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 by starting from the boot disk and going to the command line in the recovery console, to open which you press the “R” key. Next, you need to first use the check disk command and then fix (restore) boot records.

The whole sequence looks like this:

• chkdsk c: /f /r;
• Bootrec.exe /FixMbr;
• Bootrec.exe /FixBoot.

After entering commands, punctuation marks are not placed, but the enter key is pressed. If for some reason executing these commands does not have a positive effect, you can alternatively use a complete rewrite 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.

You can also use some third-party utilities. 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), the following should be written:

• MbrFix.exe /drive 0 fixmbr /win7.

This will save the user from having to make changes to boot records, and the boot will be restored.

Problems accessing the NTLDR file

When a message appears that a given component is missing from the system, a boot commit is first applied, 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 would look like this:

• E:\i386> copy ntldr C:\ (after copying, the system will boot without problems).

Damaged or missing HAL.dll file

If the computer turns on, but the operating system does not load in normal mode, the reason may be a damaged component HAL.dll (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 the Enter key and restart).

Instead of a total

Here is a brief summary of everything that concerns solving the problem of the inability to start the operating system. Naturally, the issues that the cause could be low power, CMOS battery failure, loose cable connections, dust inside the system unit, or other malfunctions were not addressed here. But in software terms, the above methods work flawlessly.

It often happens that the browser cannot open some specific site, which was previously available for viewing. At the same time, it opens pages of other sites perfectly and the user does not experience any difficulties - everything is normal. It would seem that the server simply does not work - the site has been disabled. But bad luck, if suddenly you access 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.

Here, for example, is the standard error that appears in the browser Google Chrome: « Sorry, Google Chrome can't open the page blah blah blah…«:

First of all, if you encounter a similar problem, you do not need to immediately follow the advice to clear the cache and delete cookies, because if you do this, you will have to re-enter the password in Odnoklassniki, remember password In contact with🙁 First, try accessing the page from other browsers, such as Firefox, I.E., Opera. If the response 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 was previously called Opera Turbo. An important feature of this mode for us is that the site opens 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 not maintained. It is quite possible that it will be turned on after some time.

But if the site does open, then we will try to narrow down the circle of “suspects.” I’ll say right away: if you cannot access Microsoft antivirus sites, then this is 200% a 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 shorten the lines regarding your site, save the file to your 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 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 range of addresses) website hosting. This is not your fault; it happens that the hosting blocks the addresses from which attempts were made hacking, DDOS attacks. Just wait until the IP is unbanned - it will take about a week.

There may also be a simple routing error. A similar problem is solved within a day or two.

Hi all! In this article we will talk about a very untidy problem - when the site is displayed incorrectly. It happens when the page is not loaded completely, and some elements are not loaded after a while. This may cause both images and scripts with text blocks to stop loading.

Further solutions will help you understand the problem on any Windows operating system (7, 8.1, 10 and even XP). By the way, the same problems arise on smartphones and tablets - I’ll talk about the solution below. Usually, if pages do not load completely in a mobile browser or they are displayed incorrectly, this may indicate a malfunction of the router.

We will consider all possible solutions for browsers: Opera, Chrome, Yandex Browser. If you use Microsoft Edge or Internet Explorer, and if you have any difficulties and my recommendations do not help, then write about it below the article.

HELP! If any difficulties arise, don’t be shy and write in the comments. My team or I will help you.

Causes and initial solutions

First of all, you need to think about the reason and why the browser does not fully load the site. To begin with, you can simply restart the browser - close it by clicking on the cross and launch it again. It happens that the problem is related to a glitch in the system or the router itself. So we simply reboot both the computer and your home router.

Almost all routers have a reset button - just press it twice and it should turn off and on again. If there is no such button, then you can safely unplug it from the outlet and then install it back.

Also remember if you have previously installed any programs or applications that could theoretically interfere with the operation of the browser. This also applies to extensions. Especially any ad blockers (Adblock, Adguard, AdMuncher), which can work crookedly and block everything. Go to your browser, find the extensions section and disable everything.

Clearing browser cache and extensions

The cache allows you not to load some elements or even entire pages of the site. But sometimes when it fails, it can result in you having this problem. So we'll just go in and clean it out now.

Google Chrome

Make sure that the block shown in the image below is selected and click on the delete button. After this, restart your browser.

Now you need to disable additional extensions. I would advise turning everything off, since you don't know which extension is interfering. In the same section of the menu you need to select “Extensions”. Then switch the sliders to “off” mode.

Opera

Now click on the clear button.

To turn off extensions in the same menu, you need to go to “Extensions” twice. I advise you to turn everything off.

Firefox

Click on the three lines in the upper right corner of the window, then select “Settings”. In the left menu, click on the “Privacy and Protection” block. After that, scroll down a little to the “History” section and click on the “Delete History” button. A window will pop up - you need to select the delete button.

Open the menu and click "Add-ons", and then on the left side click "Extensions". Disable everything you don't need, but everything is better.

Yandex

On the right side, click “Clear history”. Next, a window will open where you only need to click one button.

To disable extensions, just below in the menu you should see working extensions. Right-click on any one, and then select “Configure extensions.” Now we disable unnecessary and suspicious ones.

Suspicious programs and viruses

Even if you don’t remember installing something, I advise you to check it. Because sometimes applications are installed in the background with other programs.

Go to “Programs and Features” and set the sort by installation date

After doing this, you should see programs that were installed most recently. If you see something suspicious, delete it. This also applies to applications that work with virtual local networks.

Next, you need to scan your PC for viruses. If you don't have an antivirus program yet, you can download one to take advantage of the free trial. There are also free antiviruses like Avast on the Internet (you can use it).

The next step is to check for unnecessary programs in startup. To do this, we will use the CCleaner program.

First, clean your computer. This cleaning, by the way, clears the entire cache on all browsers. So in the future you can do just that. Next, go to the “Register” and correct errors. At the very end, go to “Service” - “Startup” - turn on sorting to see which programs are loaded along with the system.

You need to turn off everything unnecessary that you definitely don’t need. Look carefully - this is especially true for applications without a publisher. Turn off any bootloaders. You can leave only the antivirus. Next, restart the computer.

MTU changes

MTU (maximum transmission unit) is the maximum number of bytes in a block that are transmitted at a time. Sometimes this value is too large and interferes with the loading of pages. Therefore, it can be made a little smaller. Often this problem is solved with 3G, 4G Internet, which is connected to the router.

First, you need to go to the router's Web configurator. This is done quite easily and I wrote a separate one about this. We go there and go inside the router. I will say right away that we need to change it and set it a little smaller. For example, if your value was 1500, then we make it less by 50 or 60. Within 100. That is, the maximum reduction is to 1400.

ATTENTION! After you change the value to another, you will need to click on the save settings button. Otherwise, the MTU will not change.

TP-Link

“Network” – “WAN”. Some firmware hides additional information - this is a bug. Just click just below the Connection Type settings if you don't see the MTU line.

Sometimes computer users may encounter unpleasant situations when something does not work for reasons unknown to them. A common situation is when there seems to be Internet access, but pages in the browser still do not open. Let's see how to solve this problem.

If the site does not launch in the browser, this is immediately obvious - a similar inscription appears in the center of the page: "The page is not available", "Cannot access the site" etc. This situation can occur for the following reasons: lack of Internet connection, problems in the computer or in the browser itself, etc. To fix 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 trivial, but very common reason that pages do not load in the browser. The first thing you need to do is check your Internet connection. An easy way is to launch any other installed browser. If the pages launch in any web browser, then there is an Internet connection.

Sometimes the system crashes, causing the necessary browser processes to close. To resolve this problem, it will be enough to restart the computer.

Method 3: Check the shortcut

Many people launch their browser from a shortcut on their desktop. However, it has been noted that viruses can replace shortcuts. The next lesson talks about how to replace an old shortcut with a new one.

Method 4: Check for malware

A common reason for browser malfunction is the action of viruses. You need to conduct a full scan of your computer using an antivirus or a special program. How to check your computer for viruses is discussed in detail in the following article.

Method 5: Cleaning extensions

Viruses can replace installed browser extensions. 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: Use automatic parameter detection

You can also configure the proxy server in the browser itself. For example, in Google Chrome, Opera and Yandex Browser the actions will be almost the same.

In the Mozilla Firefox browser

In Internet Explorer, perform the following steps:

Method 7: Check the registry

If the above options do not help solve the problem, then you should make changes to the registry, since viruses can be registered in it. On licensed Windows, the value of the entry is "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: DNS server address changes

Method 10: Changes in DNS Server

So we looked at the main options for action when pages do not open in the browser, but the Internet is available. We hope your problem is now resolved.

Are you having trouble loading your website? Don't worry - we're here to help you. This article will show you how to fix the problem so you can get back to surfing the Internet.

First let's determine what the problem is

With a little detective work, we can narrow down our problem.

1. Open a new tab and see if you can load another website, such as google.com or mozilla.org.
2. Launch another browser, for example Internet Explorer or Microsoft Edge Safari Google Chrome and try opening the site you are having problems with.

The problem only occurs on certain websites

If you see one of the following error messages, it may be due to a problem with the Firefox cache:

• The connection was interrupted
• The connection was reset
• Connection timed out

Try clearing Firefox cookies and cache

Complete these steps and then reload the website you are having problems with.

If clearing Firefox's cookies and cache doesn't help, it's probably a sign that the problem lies with the website itself. In this case, all you have to do is wait until the problem is fixed. With large websites like Twitter or Facebook, this can only take a few minutes.

If you don't see any of the error messages described above, check to see if your problem fits one of the specific problems listed below:

The website loads but does not work correctly

If a website doesn't look right or doesn't work the way it's supposed to, you should review the following articles:

The problem only occurs on a secure (https) website

Look at the web address in the address bar. It starts with https://(pay attention to "s")? If so, check to see if you receive the following error messages:

The problem only occurs in Firefox

If your other web browser works fine, one of the following solutions will work for you:

• Firefox can't load websites even though other browsers can - if you can view websites in other browsers but can't view them in Firefox.
• Unable to connect to websites after updating Firefox - If you are having connection problems after you update Firefox.

If you see the following error messages, Firefox is trying to access the Internet through a proxy server:

• Proxy server refuses connection
• Could not find proxy server

If you connect to the Internet through a proxy, compare Firefox settings with Internet Explorer - read the Microsoft Guide to Proxy Settings.Read the article Entering proxy settings on a Mac in Apple Support for more information about proxy settings.

To check your connection settings in Firefox:

If the problem occurs in all web browsers

This is probably a problem with your Internet connection. For some tips to resolve this issue, see the article Firefox and other browsers can't load websites.

Other, less common problems

• Website says Firefox is outdated, incompatible, or not supported- For more information, read Websites report that Firefox version is outdated or incompatible, even if it is the latest version.
• The plugin crashed- This means that the plugin used to display content on the current page quit unexpectedly. For more information, read Reporting Plugin Crashes to Help Mozilla Improve Firefox.
• Reports about malicious sites- If you see the warning "This site is suspected of attacks!" or "This site is suspected of being a scam!", Firefox has blocked access to the site you are visiting to protect you from malware or a fake site (phishing). For more information, read Phishing and Malware Protection (Mozilla.org).
• Offline mode- If you see a message about offline mode, you may need to configure Firefox not to use your network connection. Make sure your computer has a network connection and then:
• Invalid redirect on page- This problem may be caused by problems with cookies. For more information, read Websites Say Cookies Are Blocked - How to Unblock Them.
• If you receive an error File not found, try the troubleshooting steps described in these articles:
  • Troubleshoot extensions, themes, and hardware acceleration to solve common Firefox issues
  • Troubleshoot Firefox problems caused by malware
• Content type error- If you receive an error message Content type error or The page you are trying to view cannot be displayed because it uses an incorrect or unsupported form of compression., use the following steps to diagnose and fix the problem:
  1. Check the settings of any Internet security applications you use (including firewalls, antivirus/antispyware, and privacy programs). You should remove any permissions these apps have for Firefox and then add them again. For instructions specific to some applications, read