Home News Best Way To Fix Operating System Not Detected Error In Windows 7

Best Way To Fix Operating System Not Detected Error In Windows 7

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It’s worth checking out these troubleshooting methods if the operating system didn’t find an error in the Windows 7 error message on your computer.

 

 

Fix “Operating system not found” startup error for Windows XP, Vista, 7, 8, 8.1 or Windows 10.

This error is also common on Sony VIO laptops, including the Ultra T and S series books.

Reasons For Missing Operating System / Operating System Not Found

If an error occurs in BIOS setup, hard disk status, or Master Boot Record (MBR), you will usually not be able to boot Windows and the two mentioned error messages will appear. To be precise, the reasons that prevent the operating system from being detected are as follows.

  • The Basic Input / Output System (BIOS) does not recognize the hard drive.
  • The hard disk is damaged.
  • Incorrect / incorrect BIOS settings
  • MBR (Windows Master Boot Record) is corrupted / corrupted.
  • Incompatible section is defined as active

Note. If the BIOS does not recognize the operating system, you will receive one of the following error messages reporting the same problem with different versions of the operating system.

Error message 1: No operating system

Message about error 2: Operating system not found

How To Fix The “Operating System Not Found” Error

  1. Restart your computer . The “Operating system not found” error can be a temporary error that can be fixed by restarting.

  2. Disconnect unnecessary flash drives, remove the disc, if present, and remove the floppy disks. Your computer may be trying to find a suitable operating system on one of these devices. If this is not possible, you may see an “Operating system not found” error.

  3. Start BIOS and make sure the hard drive where the operating system is installed is listed as the first boot device. If not, change the boot order to make this happen.

    This is important because your computer will assume there is no operating system to boot if something else, such as a flash drive or disk, takes precedence but does not have an operating system on it. ” And the operating system “starting” could not be found – error.

  4. Enable or disable UEFI Secure Boot, whichever is currently installed. Starting Windows in UEFI mode depends on whether it is a GUID partition table or an MBR floppy disk. Enabling or disabling Secure Boot can determine if the error is related.

    To do this, use the BIOS setup utility (to access it, see the link in step 3) on the Security tab. Switch safe start to the current value, i.e. enabled or disabled.

    After this step, restart your computer. If you still receive the “Operating system not found” error, reset this setting to its original value and skip to the next sentence.

  5. Reset BIOS to factory default . Undoing each BIOS setting can reset something that was previously hiding the hard drive or interfering with OS detection.

    The easiest way to resolve an Operating System Not Found error during a BIOS reset is to look for the reset option in BIOS setup. It could be a function key like F9 that you need to press, or a menu item under The name BIOS Reset. The exact steps to be taken depend on the BIOS manufacturer.

  6. Repair the startup records to resolve the “Operating system not found” error. Valid boot records are required for the normal boot process. If the Master Boot Record (MBR) or Boot Configuration Record (BCD) memory is damaged or missing, you may receive an “Operating System Not Found” error.

    Since you cannot access Windows due to an error, you will need to use an installation CD or flash drive to access the recovery tools we are talking about in this and the next steps. Find out how to do it on Windows 10 and 8 here; Windows 7 ( here ) and Vista ( here ) users can follow similar steps.

    Start by rebuilding the BCD using this command (open this link to see all the steps required to get to the command line where you can enter this):

    bootrec.exe / rebuildbcd 

    After executing the previous command, while still at theOn the command line, enter:

    bootrec.exe / fixmbr 

    Finally, restart your computer to see if the “Operating system not found” error has been resolved.

  7. operating system not found error in windows 7

    Use the diskpart command to activate the partition where Windows is installed. It could have been disabled for some reason, which explains why the “Operating system not found” error is displayed.

    Enter the command prompt from the installation CD, following the same steps as above, then enter this command:

    Diskpart 

    Followed by:

    List of hard drives 

    Use this command to select the hard drive that matches the hard drive where the operating system is installed (most users will only see one in the list):

    Select disk 0 

    Use this command to list all partitions on this hard drive:

    List volume 

    Enter this to select the partition on your hard drive where Windows is installed:

    Select volume 2 

    Turn up the volume with this command:

    active 

    Е If you’ve fixed the “Operating system not found” error, Windows should start normally on reboot. Exit the command prompt and click Next to start the operating system.

  8. Reinstall the hard drive power and data cables . Disconnected or loose cables can cause an “Operating system not found” error.

  9. Reinstall the Windows operating system . The “Operating system not found” error can be literal. Malicious software or unwanted formatting may have removed the operating system from the hard drive.

    If you are unable to access the hard drive to reinstall the operating system, the last option is step 10.

  10. At the moment, a faulty hard drive is the only reason you are still getting the error. Replace hard drive and install a new version of the operating system to resolve the “Operating system not found” error.

The “Operating system not found” error can appear on any computer controlled byWindows 10, Windows 8, Windows 7, Windows Vista, or Windows XP.

Since you cannot access Windows due to an error, you will need to use an installation CD or flash drive to access the recovery tools we are talking about in this and the next steps. Find out how to do it on Windows 10 and 8 here; Windows 7 ( here ) and Vista ( here ) users can follow similar steps.

Thank you for letting us know!

 

 

How do I fix no operating system found?

Operating system not found? Here’s how to fix itCheck BIOS.Reboot BIOS. If your computer doesn’t recognize your hard drive, there are many possible reasons. …Correct the startup entries. Windows basically uses three sets of data to start your computer. …Enable or disable UEFI Secure Boot. …Activate the Windows partition. …Use Easy Recovery Essentials.26 October 2017

How do I fix error 1962 no operating system found?

To change the boot priority, follow these steps: If you see error 1962: Operating system not found, press and hold Ctrl Alt Del to restart your computer. Press the F12 key several times during boot to start BIOS setup. When you see the configuration window, press Enter. April 15, 2019