1. The computer does not have a floppy drive. Solution: When starting up, press the del key to enter the bios setting interface, and close the detection floppy disk drive.
2. The motherboard battery is low or damaged. Solution: Replace the motherboard bios battery.
3. The system hard disk is damaged. Solution: First back up the important data of the hard disk, and then replace or repair the hard disk.
4. The CPU fan is not working properly. Solution: Open the chassis, check whether the CPU fan is not working properly, report for repair or contact the maintenance station
5. The cmos time and date are not set. Solution: Start up and press the del key to enter bios settings. In the first item, find the date and time items, set the time and date, press f10, and then select yes to save and exit.
6. There is a problem with the USB device. Solution: This means that the USB disk has been inserted before starting the computer. In this case, it is better to unplug the USB disk and turn on the computer.