Analysis:
1, or hard disk drive jumper is not correct;
2, PC There is a problem with the startup items of the bios setting;
3, the optical drive or the hard disk is damaged;
4, there is no floppy drive on the computer, but we did not turn it off in the bios;
5, there are external devices on the computer, such as U disk. (However, it is usually not caused by this reason)
Solution:
1. Check if our hard disk or CD-ROM jumper has not been set incorrectly;
2. Check our bios There is no problem in setting the startup item;
3. Check if the CD-ROM drive or the hard disk is damaged, if any, please replace it under repair;
4. Enter bios to set it. The floppy drive is turned off;
5, first pull out the u disk or CD on the computer and try again.
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