The system will not be deleted after the motherboard CMOS lithium battery is removed and discharged.
Discharge effect: Clear CMOS memory. Restore CMOS factory settings and some memory viruses. Clear the power-on password and other related information.
Restore principle: After the host is turned off, the motherboard BIOS needs power to save the settings. Otherwise, it will restore factory settings. And it is this battery that provides energy when it is discharged. Once the battery is removed, the BIOS program will return to factory settings.
Urgent, what does CMOS look like on a computer motherboard, and how to unload it?
It's very simple. Generally, a prompt will appear when starting the computer
Then you will be asked to press F1 DEL or similar
When you enter the system, you will find that all thes hours were changed to 00:00, which means the battery is dead. , if you don't have it, just replace it. You can buy a computer for 2-5 yuan. When the computer is off, open the case and find where. The computer is. Just replace it. Most primary school students will replace him. This operation is not difficult.
There are two discharge methods
1: Short circuiting the battery. discharge method.
a: Remove the button battery.
b: It usually takes 3 minutes to connect the positive and negative poles with a metal or flat blade screwdriver.
2: Jump point method.
a: Are there clear marks? and cmos? next to the battery.
b: The original pin cap of the motherboard is in position 1 2 (Normal). Remove the pin cap and insert it into position 2? 3 (cmos? clear) for more than 3 seconds.
c: Reinsert the capneedle 1 2.