How to solve the computer prompt "reboot and select proper boot device"

Reinstalling the system may not be a foolproof solution, but after reinstalling, I found that when the computer is turned on, it will display white text on a black background, and then give a prompt: reboot and select proper bootdevice. What is going on? Such a prompt is usually caused by a boot error. In order to help everyone, the editor has brought you a solution.

Computer use is becoming more and more popular, and computer failures are becoming more and more common. No, recently some users encountered a black screen when turning on the computer, and prompted Reboot and Select properBoot device. The computer system cannot be started normally. What's going on? How to solve it? Users are confused. Now, the editor will introduce to you how to set up shared folders in win8.

How to solve the computer prompt reboot and select proper boot device

This is the Acer motherboard, take this as an example.

Click del to enter the boot interface. You can see that the original settings are like this

Restart Figure-1

This is because the safe boot mode is turned on Verify that the Launch CSM under the boot options item is in the unchangeable grayscale state Never.

Computer prompt picture-2

But when we change the option to disable.

Computer prompt picture-3

The corresponding Launch CSM becomes changeable, change never to always .

Startup diagram-4

F10 save and restart to enter Win7.

Restart Figure-5

The above is the solution to reboot and select proper boot device.

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