How to Fix Operating System not Found Windows 10?

How to Fix “Operating System not Found” Error on Windows 10?

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

How do I Fix Operating System not Found?

Check the BIOS.
Reset the BIOS.
Fix the Boot Records. Microsoft Windows primarily relies on three records to boot your machine.
Enable or Disable UEFI Secure Boot.
Activate the Windows Partition.
Use Easy Recovery Essentials.

How do I Fix Missing Operating System Without CD?

Solution 1. Check If Hard Drive Is Detected by BIOS.
Solution 2. Test Hard Disk to See Whether It Failed or Not.
Solution 3. Set BIOS to Default State.
Solution 4. Rebuild Master Boot Record.
Solution 5. Set Correct Partition Active.

How do I Fix Operating System not Found in Windows no Bootable Device?

Boot from the Windows install disc.
Click on Repair your computer after selecting proper language, time and keyboard input.
Select the Windows installation drive, which is usually C:\ , and click Next.
Choose Command Prompt when the System Recovery Options box appears.

How do I Restore my Windows 10 Operating System?

Click the Advanced options button.
Click on Troubleshoot.
Click on Advanced options.
Click on System Restore .
Select your Windows 10 account.
Confirm the account password.
Click the Continue button.
Click the Next button.