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Non system disk or disk error

Has this ever happened to you? When you start your computer, and the “non system disk or disk error” message appears in the black screen. So you press any key to restart, but still get the same message. After several times of restart, you might start your computer successfully. But why does this error message shows up often, and how to solve the non system disk or disk error problem. Here is the solution:

1. Remove any USB devices and CD/DVD discs
It is quite possible that the computer try to boot from a non system disc like USB devices or CD/DVD discs.

2. Change the boot order
If you can start up your computer after removing USB devices or CD/DVD discs, you have to change your boot order back to avoid this non system disk or disk error happening again. During the start up, press the F10 key to open the System Configuration -> select Boot Options -> press F9 and Yes to load Setup Defaults.

3. Repair the disk errors
If this problem still can not be solved, it might cause by hard drive errors. You can use hard disk repair software to check and fix all the disk errors, and restart your computer again.

4. Reinstall the Hard Drive
If this non system disk or disk error still exist, the hard drive might have moved and disrupted the connection by accident, so you have to check the problem and reinstall your Hard Drive.

5. Reinstall the OS
If all the method above can not solve the problem, you have to reinstall your operation system.

Here we recommend one of the most popular system maintenance software – Advanced SystemCare, which can defragment disk and repair disk errors regularly, avoid this non system disk or disk error happening and keep your computer in top performance.

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Non system disk or disk error is written by IObit, no copy is allowed.

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