Sobs Operating System Not Found. How to get rid of Operating System Not Found error. Switching hard drive modes in Bios UEFI

Hello, dear friends! If you start a computer launch, an error appears on the monitor with the name "Operating System Not Found". Instead windows downloadsThe screen displays a message that translated from English to Russian means that the system is not found.

Many have such a mistake causes negative emotions, but everything is not as scary, as it seems at first glance. Consider in order that this is an error, why it appears and how to eliminate it on their own, not paying for help to qualified specialists.

Error "Operating System Not Found" - what does it mean?

"The operating system is not found" - so that it could mean? After all, Windows is installed on the computer, and before that it launched without problems. Such an error usually occurs after the user conducted a hard disk manipulation, for example, changed it to another or a new one. If nothing like the user did not perform, then the reason may hide in the failure of the hard drive or the problem with the plume connection.

The second probable cause of the manifestation of the error is incorrect installation of BIOS parameters.

Most often as incorrect installation BIOS settings is the arrangement of HDD or hard disk Not on the first, but in second place. Initially, you need to make sure that the loop is connected to the hard disk, and only after that you need to go to the BIOS to verify that hDD It is worth the start of the launch.

Check if the flash drive is not inserted into the computer with which the computer is trying to start. An error message arises on various versions of WindowsXP operating systems, 7, 8, 8.1 and 10. If the problem occurred on a laptop, the probability of the failure of the hard drive is 90%. To try to eliminate the error, you need to do a number of some manipulations. Why try? Because at the same time we will look for the cause and try to fix it, unless of course the whole thing is not the failure of the hard drive.

I How can I correct the error "Operating System Not Found"?

If checked system unit on the lack of defects with connect hard Disc, then turn on the computer, and download the BIOS system. You need to check whether the parameters are set to the BIOS correctly, and if not, it is enough to change them to return the computer performance.

To get into the BIOS, you need to press the F2 or F12 key during the launch of the computer or the laptop. After the blue screen appears, where everything is written on english language (This is the BIOS shell configuration), you need to go to the BOOT section using the arrow on the keyboard.

It is interesting! For those who have never been to bIOS systemit will be useful to know that the management of this shell occurs only with the help of the keyboard, and the mouse is inactive here, well, and in the new version of the OS, the mouse is actively active (the example of the example on new version BIOS).

After switching to the BOOT section (on some versions of Advanced), a list of devices connected to a computer will appear. The name of the hard disk must stand in the first place. If so, then the cause of the malfunction is not in the BIOS configuration. If the hard disk stands on the second or other places, then the problem is found. Correct it in the following way:

1) Highlight the hard disk name with a white color using the up / down arrow.

2) Press Enter, then move the hard drive to the first place.

3) Save the settings.

Now you can exit the BIOS section, and download Windows. It is 100% of cases be loaded after the implementation of the above action.

II reset settings in BIOS

If after logging in to the BIOS, in the Boot section, the hard disk is placed in the first place, then it is possible to solve the problem by resetting the settings to the factory. In any version of the BIOS shell there are such settings, to implement which you can different ways. Consider one of them:

- Open the Exit partition.

- We find in it the location of LoadsetUpDefaults.

Save the actions performed, after which you can leave the BIOS shell, and run windows.

After making such actions, the computer will return to the factory settings. If the problem was software, and Windows was not loaded precisely because of it, then reset to factory settings will help solve the problem. If not, then go to the implementation of another method.

III Switching Winchester Mode

If the error "Operating System Not Found" manifests itself on a laptop, where access to the Winchester is limited or difficult, then you will need to view the settings of the modes of the hard drive. The SATA configuration has two modes - AHCI and IDE. When installing the OS and the default is aHCI mode. If you switch to the IDE mode, install Windows to the computer will not work.

If, after installing the operating system, users are experimenting with a BIOS shell, and accidentally change instead of AHCIn IDE mode, then the OS after making such changes will not start. When starting, the Operating System Not Found error appears on the monitor. If such actions are relevant, you need to change the settings, after which you repeat the Windows boot.

IV Restoration MBR Winchester

Another reason for the "Operating System Not Found" error may be a violation of the integrity of the hard disk sectors. You can correct the error by repairing sectors. You can do it yourself using a USB flash drive or boot disk. I suggest you consider this using the example of the tenth version of Windows.

Instructions for restoring the hard disk sectors look like this:

After starting from a flash drive or disk, you need to select the "System Restore" item.

Go along the path: troubleshooting - Advanced parameters - command line.

After that, you need to enter three commands in the sequence that are described below:

bootrec.exe / fixmbr.

bootRec.exe / FixBoot

bootRec.exe / RebuildBDC.

Close the command line, and restart the computer, only from the hard disk. The problem will be corrected if the cause is damage to the Winchestera sectors on which Windows is recorded.

So, summing up today's release, which implies an independent elimination of the Operating System Not Found error. You will need to carry out the following manipulations:

- Check bIOS settings, rearrange the hard disk in the first place and, if necessary, reset the data to the factory.

- Check the connection of the loops.

- when the power supply fault is detected, if it is not powares On the hard disk, you need to replace.

- Check the mode hard work Disc in BIOS and switch it to AHCI.

- Restore damaged hardware sectors.

In conclusion, I hope that today's instructions will definitely help solve the problem with the appearance of an error. If, after the actions done, the hard disk refuses to load the OS, then you need to check it on suitability, and if necessary, replace the new one.

It is always unpleasant when an error on a black or blue screen appears when the computer is turned on instead of the usual worker. wooden tables. In this case, users worries the problem on the black screen, which does not allow to boot the system, more precisely, the error says that there are no systems at all. You can see it in this image :. It is written that operating system not found, let's understand.

What to do with an Operating System Not Found error

Why arises this problem? The most basic culprit problem is associated with hard disk and most, though rarely, just moved the train, from the port of connecting to system board or HDD itself. The second point - the wrong BIOS parameters are set. For example, the hard drive is not in the first place, but on the last, or some other options are changed. Also any defective component, whether it is a power supply or something else can affect the appearance of the specified error.

Now by contract. Check the BIOS for incorrectly set options. On the tab Boot or Advanced Make sure the hard disk (HDD) is in the first place. If this is not the case, then move it with the use of arrows or keys F5 and F6, depending on the BIOS version. If the settings are all true, then simply. From this it will not be worse, and the error may disappear.

And how to be if the hard disk is not highlighted in the BIOS? There are two options. I spoke at the beginning, the disc could be disconnected by the unknown force or simply moved the train. It is necessary to completely turn off the computer and check all the wires, they are tightly connected. The second option is the hard disk malfunction. There is nothing left, how to test it for performance from another PC.

When operating System Not Found appears on a laptop, the probability is very small that the wires and loops will be departed, since everything is tight and compactly located there. Most likely your disk is simply faulty or problems in the BIOS.

Software solutions

Above, we disassembled physical solutions, and now let's see how it can be corrected by software.

Another I. frequent problem It is that on the hard disk, where the operating system has been installed. More precisely, try to do it. Eventually boot record The old OS was labeled new, but it happened that not one OS was not loaded and an Operating System Not Found error appears. To fix this problem, you need to restore Windows Loader.

The last version of the solution, although it does not apply to the program, but finally impart it here - replacing the power supply. He could be either completely faulty (although I doubt that after that the computer would be launched), or partly.

Let's summarize what they wrote about this error:

Reset the BIOS settings;
Rearrange the hard disk with the system to first place in the list of devices;
Check the loops and wires of connecting to the HDD, whether everything is tightly connected;
With a faulty disk, make sure that. Connect to another PC (the disk may not be determined in the BIOS);
Replacement faulty block nutrition;
Restore the bootloader

Now you know about the main error solutions Operating System Not Found. I specified the necessary links, otherwise I would have to rewrite what is already there. I hope it will help you and good luck to you! By the way, I wrote another article. Read it, maybe the instruction from there will help you too.

Operating System Not Found

Everyone knows that the operating system is mainly on the hard disk or on SSD. And when people see this error on the screen, the first thought that occurs in the head that the hard disk is defective or damaged.
In most cases, this is, although there are exceptions. It is possible damage to the loading volume of your operating system;

And after these two possible reasons, then comes to the possibility of your hard drive so that it can be a little defective, and I think you fix it too;

operating System Not Found Error What to do?

In fact, this is a mistake Bios. And it can arise on any computer or laptop. No matter what operating system is installed, this error may occur as Windows 10 and on Ubuntu..

Bios. Responsible for the launch of your computer, including for the launch of the operating system. Showing an error message "The operating system is not found" when the system starts, your Bios. Trying to say that something does not allow you to load the operating system during the launch of the computer.

Possible causes Operating System Not Found Dell:

As mentioned, an Operating System Wasn T Found may occur on any computer or laptop, no matter what you use a laptop Sony Vaio. or computer Dell.Some possible reasons Error occurrence:

The boot volume of the computer is damaged.
BIOS needs a reboot.
internal computer hard disk cable is damaged.

Error Correction Methods Error 1962 No Operating System Found:

The best way to identify the problem is to check hard condition disk or SSD.- Connection B. Bios.. It will help determine whether or not, your hard disk is connected.

To check the status, just open Bios. Your computer when starting and find system information, in the menu BIOS.

Condition No. 1: What if your hard disk is listed in the BIOS?

If so, it is quite possible that some external storage device or maybe the loading of your hard disk creates some kind of problem with BIOS.

So how to fix it:

Method 1 - Disconnect everything external devices Storage, if they are connected, and then download the computer again. If the error does not appear, some of your external USB Create a problem. If she is still left, try the following way.

Method 3 Use the recovery tool when starting, as it will restore the boot tom Windows. These links will help you with this. \u003e\u003e
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If nothing can, I am afraid that you will have to reinstall the operating system.

Condition No. 2: What to do if your hard disk is not in the BIOS list?

If your hard disk is not in the BIOS list, it is possible that this problem may be associated with the HDD / SSD fault;

So let's see what you can do here:

Replace cable SATA.. In most cases, this small thing can save you a lot of money before you go buy a new hard drive for your computer; Open your desktop housing and check the cable SATA. For visible damage. I'm talking about desktop computer Because in laptops simply do not have this cable. Through this cable, data is transmitted, so its damage means the impossibility to use a hard drive for your computer. SATA cable is much cheaper than a new hard drive, and I advise you, first buy a new cable and test the system's work with it.

If the cable replacement did not help solve the problem or Operating System Not Found On a laptop, I will have to upset you. Most likely your hard drive is faulty.
Not everything is so bad. In most cases, data on the disk can be restored. In any case, you need to attribute a hard drive to a specialist.

In contact with

One of the most terrible user errors is the one that appears when the computer is turned on and informs us, on the Black BIOS screen, which "". When this message appears, the loading of our system will be impossible, and the only output is to restart the computer by clicking "Ctrl + Alt + Del", and at the same time you will most likely see this message again An Operating System WASN "T Found. Ttry Disconnecting Any Drives That Don" T Contain An Operating System. Press Ctrl + Alt + Del to Restart.

The error problem is that the operating system is not displayed, and therefore the BIOS cannot load the Windows system. The reasons for the appearance of this error are very diverse: from a simple configuration error in the BIOS to a more serious problem, which in the worst case makes us fully format the computer. By this we will analyze the main causes and their solutions to eliminate the error "" ( An Operating System WASN "T Found).

Disable external USB devices from a computer

If several internal are connected on the computer hard disks, external and USB flash drives, it is likely that BIOS is trying to find the operating system in the wrong place. Consequently, without finding the Windows system, it gives an error "no operating system not found".

To solve this problem, you need to disable all external storage devices connected to USB ports and try again. We can also test our optical driveTo make sure that it does not try to download the wrong DVD.

If after that the problem is still not solved, the next step will be the transition to the BIOS settings.

BIOS boot priority change

Go to the BIOS configuration by pressing the F2, F12 or Delete buttons. After that, go to the configuration section Bootand put in the first place in the column Priority.hard disk on which the working and main operating windows system. IN different versions Bios is called differently, but you are looking for a word with a combination of priority, which means "priority load". Here are some names from different BIOS: Hard Disk Priority, Boot Device Priority, Hard Disk Boot Priority.

It can be useful: . There you will find where to look for about Priority But do not forget that there is for the manual flash drive.

After you set the priority of booting from the hard disk on which your system is located, do not forget to save the settings with the F10 button and restart the computer to make sure that the system is found when the computer is turned on. "

Enable or disable secure download

If you are using modern computer with an operating system, such as Windows 8 or Windows 10, then the reason for which our Windows does not start, is in incorrect setting Safe UEFI download.

Walk back to BIOS, find the configuration section Secure Boot (Safe loading) and deactivate it or activate if it is disabled to check whether the error disappear "The operating system is not found when the computer is loaded".

In different versions of bios. Or the UEFI layout of the settings looks different, but you are looking for a graph in any version of the bios Secure Boot, Try to disable or enable.

Reset BIOS to factory settings

In the lower part menu Bios. You will see the key for default settings or bIOS reset. On my car it F9.Confirm your solution when the query appears and restart the computer.

If you did not find an exemplary button, like F9 to reset the settings to factory, then look for a string Load Setup Default. And reset the bios.

If your hard disk with the operating system is placed first, but the computer is still not loaded, it is possible that some of the initial sectors of the disk were damaged, such as basic boot record (MBR), dOS boot record(DBR), or Download Configuration Database (BCD).

Repair of these sectors is quite simple. All we need is to start a computer with a USB or Windows DVD. You can for example or just start with and select when installing Windows Restore System.

Enter the following commands in CMD in order by pressing ENTER. To execute each command may take time.

bootrec.exe / fixmbr.
bootRec.exe / FixBoot
bootRec.exe / RebuildBCD.

Activate the Windows section

It is possible that the section on which Windows is installed is disabled. You can fix it using your own DiskPart Windows tool. To perform the following steps, you will need a USB carrier again. windows installations. Run the command line as described above, through the disk recovery or installation flash drive Windows and B. command line We take the following commands:

diskpart. - Start the tool.
lIST DISK. - List of connected disks to a computer.
sELECT DISK 0. - Select a hard disk on which you want to activate the section. In my case, the main hard drive 0.
list Volume - Shows sections on the selected hard drives.
sELECT VOLUME 2. - Choose local disk To activate. Choose the one where the Widows system itself is installed.
active.- Activate the section.

Restart the computer and make sure whether the error disappears when the computer is turned on An Operating System WASN "T Found. Ttry Disconnecting Any Drives That Don" T Contain An Operating System. Press Ctrl + Alt + Del to Restart, What does it mean operating system not foundClick to reboot ctrl + Alt + Del.

Disable external USB devices from a computer

If several internal hard drives, external and USB flash drives are connected on the computer, it is likely that BIOS is trying to find the operating system in the wrong place. Consequently, without finding the Windows system, it gives an error "no operating system not found".

To solve this problem, you need to disable all external storage devices connected to USB ports and try again. We can also check out our optical drive to make sure that it does not try to download the wrong DVD.

If after that the problem is still not solved, the next step will be the transition to the BIOS settings.

BIOS boot priority change

Go to the BIOS configuration by pressing the F2, F12 or Delete buttons. After that, go to the configuration section Bootand put in the first place in the column Priority.hard disk on which the working and main operating system Windows. In different versions, the BIOS is called differently, but you are looking for a word with a combination of priority, which means "priority load". Here are some names from different BIOS: Hard Disk Priority, Boot Device Priority, Hard Disk Boot Priority.

It can be useful: . There you will find where to look for about Priority But do not forget that there is for the manual flash drive.

Enable or disable secure download

If you use a modern computer with an operating system, such as Windows 8 or Windows 10, then the reason why our Windows is not started is in improper configuration of safe UEFI download.

In different versions of the BIOS or UEFI, the location of the settings looks different, but you in any version of the bios are looking for a column Secure Boot, Try to disable or enable.

Reset BIOS to factory settings

At the bottom of the BIOS menu, you will see the key for default settings or bIOS reset. On my car it F9.Confirm your solution when the query appears and restart the computer.

If you did not find an exemplary button, like F9 to reset the settings to factory, then look for a string Load Setup Default. And reset the bios.

Repair of these sectors is quite simple. All we need is to start a computer from a USB or Windows DVD. You can for example or just start with and select when installing Windows Restore System.

Enter the following commands in CMD in order by pressing ENTER. To execute each command may take time.

bootrec.exe / fixmbr.
bootRec.exe / FixBoot
bootRec.exe / RebuildBCD.

Activate the Windows section

It is possible that the section on which Windows is installed is disabled. You can fix it using your own DiskPart Windows tool. To perform the following steps, you will need a USB media to install Windows. Run the command prompt as described above, through the disk recovery or installation uSB flash drive And on the command line, take the following commands:

diskpart. - Start the tool.
lIST DISK. - List of connected disks to a computer.
sELECT DISK 0. - Select a hard disk on which you want to activate the section. In my case, the main hard drive 0.
list Volume - Shows sections on the selected hard drives.
sELECT VOLUME 2. - Select a local disk to activate. Choose the one where the Widows system itself is installed.
active.- Activate the section.

Sobs Operating System Not Found. How to get rid of Operating System Not Found error. Switching hard drive modes in Bios UEFI

Error "Operating System Not Found" - what does it mean?

What to do with an Operating System Not Found error

Software solutions

Operating System Not Found

operating System Not Found Error What to do?

Possible causes Operating System Not Found Dell:

Error Correction Methods Error 1962 No Operating System Found:

Condition No. 1: What if your hard disk is listed in the BIOS?

Condition No. 2: What to do if your hard disk is not in the BIOS list?

So let's see what you can do here:

Disable external USB devices from a computer

BIOS boot priority change

Enable or disable secure download

Reset BIOS to factory settings

Activate the Windows section

Disable external USB devices from a computer

BIOS boot priority change

Enable or disable secure download

Reset BIOS to factory settings

Activate the Windows section

Last

It is necessary to know