What does the maintenance master often say that the computer lights up or discharges? How to light or discharge the computer, and what effect does this have on maintenance?

It should be cmos discharging the motherboard. Coms has a memory function, which destroys the settings in Bios by discharging Cmos, thus clearing the Bios password. Also, discharging Cmos can solve some inexplicable computer startup black screen failures. Wait, that's all we know. Check the hardware before starting the computer. If it is in good condition, it passes the "self-test".

These actions are performed by pre-programmed programs in coms on the motherboard.

Discharge is to unplug a battery around the coms chip and then put it back.

Settings in the BIOS are usually restored.

Lighting means that the graphics card can output information normally and the display can display information normally when the computer is started; If you can check the BIOS normally, it means that the motherboard memory, graphics card CPU and so on are all normal. If it can't be lit, it is necessary to check which hardware is faulty.

Discharge means that the BIOS is discharged and emptied; If the BIOS option is set incorrectly, or the BIOS hardware configuration is abnormal, you can take out the CMOS battery to discharge the BIOS and automatically empty it to a long-term state.