How to clean cmos on motherboard

Most of the current motherboards are designed with CMOS discharge jumpers to facilitate users to perform discharge operations. This is the most commonly used CMOS discharge method.

Be careful to remove the battery before discharging it. (Recommended learning: Web front -end video tutorial )

This discharge jump line is generally three stitches, located near the motherboard CMOS battery socket, and a battery discharge instructions.

In the default state of the motherboard, the jumper cap will be connected to the pins marked "1" and "2". From the discharge instructions, we can know that it is "Normal", which is the normal use state.

To use this jumper to discharge, first use tweezers or other tools to pull out the jumper cap from the pins "1" and "2". Then put it on the pins marked "2" and "3" and connect them. From the discharge instructions, we can know that the status is "Clear CMOS" at this time, that is, clear CMOS (as shown in the figure below).

After a short period of contact, the user's various manual settings in the BIOS can be cleared and restored to the motherboard's factory default settings.

After discharging the CMOS, you need to remove the jumper cap from the pins "2" and "3", and then restore it to the original "1" and "2" "On the pins. Note that if the jumper cap is not restored to the Normal state, the computer cannot be started and an alarm will sound.

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