What Do I Do If My Laptop Says Operating System Not Found?

If your PC came preinstalled with Windows 7, you should be able to find a Certificate of Authenticity (COA) sticker on your computer. Your product key is printed here on the sticker. The COA sticker may be located on the top, back, bottom, or any side of your computer.

How do I fix my laptop operating system not found?

Fix #2: Change or reset the BIOS configuration

1. Restart the computer.
2. Press the necessary key to open BIOS menu. …
3. If the screen shows multiple keys, find the key to open “BIOS”, “setup” or “BIOS menu”
4. Check the BIOS’ main screen to see whether it detects the hard drive, and the boot order to see if it is set correctly.

How do I fix Windows 10 operating system not found?

Method 1. Fix MBR/DBR/BCD

1. Boot up the PC that is having an Operating system not found error and then insert the DVD/USB.
2. Then press any key to boot from the external drive.
3. When Windows Setup shows up, set keyboard, language, and other required settings, and press Next.
4. Then select Repair your PC.