No operating system found windows 8

If the settings in your BIOS menu are fine and you encounter the error message, skip to part 5 to fix it. On the other hand, if hard drive is missing on BIOS menu, you should go try the solution in part 4 after testing your hard drive. If not sure, you can test and diagnose if the hard disk is fine. In most computers, the diagnosis tool has pre-installed in the BIOS system.

The diagnostic tool may be different on computers from various brands; you can get the information on manufacturer's website. Step 3. Once the testing process is done, you can decide to replace the damaged disk or keep on troubleshooting according to the result.

Note: Generally speaking, there are damaged sectors on hard drives due to incorrect operations, virus or other factors. But it does not mean that the entire hard disk is dead. You can mark the damage sectors with third party programs and using your hard disk without problems. If you prepare to replace the damaged hard disk, you'd better back up data first.

If your hard disk is fine and the operating system not found due to BIOS not recognizing your hard drive, you can try resetting the entire BIOS menu to default values, following the steps below. Press "F9" to perform the command "Setup Defaults". When prompted and restart your device, press the "Load Optimal Defaults" option to confirm the operation.

If any of them is damaged or corrupted, you will see operating system not found on your screen. Fortunately, it is simple to fix this problem by rebuilding Master Boot Record. Insert Windows Installation disk or Windows repair disk into your computer and reboot it.

When Windows Setup screen appears, fill out the preference settings and click "Next". Then select "Repair your computer" to move on.

Step 4. Input the commands below and hit the Enter key after each of them: bootrec. Step 5. Finally, reboot your PC and check if your operating system works now.

Note: On Windows 7 and earlier, the system recovery options window will pop up after click "Repair your computer", and then you can select Command Prompt to open it directly. As said before, it is possible that the partition that contains Windows boot files is no longer active, and trigger the error message operating system not found.

To set the correct partition active, you also need to open the Command Prompt using the Windows installation or repair disk. Input "diskpart" and press "Enter" key, then type in "list disk" and hit "Enter". Now, you can see all disks in your PC. Write down the disk number contains Windows partition, usually the latest one. Type in "select disk [number]" and press "Enter" key. Tip: Use your disk number to replace [number]. This time, input list volume and hit "Enter" to display all the partitions on the hard disk.

Remember the partition that Windows is installed on. Reboot the device - you can do this quickly from the command prompt by typing: shutdown -f -r -t 00 and pressing Enter. Windows 10 More Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. You can follow the question or vote as helpful, but you cannot reply to this thread.

I have the same question Report abuse. Details required :. Cancel Submit. Morris Subba. Hi, As per the description, I understand that you are not able to boot your computer getting error message "No operating system found". What is make and model of the computer?

How did you create a partition for installing Windows and Ubuntu? If yes, o n which partition you have installed Ubuntu From the error description, it appears the boot sector files are corrupt or missing.

The boot menu key might differ with each manufacturer. If you are unable to find the boot menu key, you may refer the user manual. Press any key. Select the correct time and Keyboard type. Click Repair your computer in the lower left corner Click on Troubleshooting, advanced option and then click Command prompt. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site.

Bill Smithers Volunteer Moderator.