This situation is usually caused by the computer getting stuck while testing certain hardware during self-test.

Solution:

1. Keyboard and mouse reasons: The power-on self-test will detect the mouse and keyboard. If a problem occurs, it will cause the self-test interface to be stuck. The solution is to unplug the keyboard and mouse. Check whether the self-test passes. If so, replace the mouse and keyboard.

2. Reasons for hard disk and optical drive: The power-on self-test will also detect the hard disk and optical drive. You need to unplug the power cord and data cable of the hard disk and optical drive, then restart to see if it passes the self-test. If it passes, Then further rule out the problem of hard drive or optical drive.

3. If the above operations are ineffective, then it is possible that the hardware is faulty. It is recommended to contact the official after-sales service center, and engineers will help check and deal with it.