As per the question, the desktop motherboard battery only powers CMOS memory. Disconnecting this battery may initialize the resource allocation of the main (board) computer, meaning that relevant user-defined program settings will be lost. This has almost no impact on the operation of the operating system.
The motherboard battery is used to record the computer system time, that is, to maintain the accuracy of the system clock. When the battery is insufficient, the time will also return to the factory date. saves hardware information used during boot, and also serves to retain CMOS BIOS information. Ordinary microcomputer motherboard batteries are generally CR2032, which cannot be charged during our use. There is a misconception that the motherboard battery ist rechargeable. The packaging or battery body of the CR2032 is labeled lithium battery or LITHIUM, which refers to a battery composed of lithium and not a lithium-ion battery. The latter is the one that can be recharged.
If the computer forgets the password and it still cannot be turned on after removing the lithium battery
It will consume power . The battery of the laptop is the same as that of the mobile. phone battery we usually use. When your phone is turned off and not in use, it will also lose power. We also need to remove it and recharge it later. The same principle applies to laptops. However, if you experience obvious changes, it means your battery is aging and needs to be replaced with a new one.
You can access the system by canceling the login password and then changing the password again.password.
The first type: you can start it via the “PE System Installation Disk”. There is usually a "Cancel Power-on Password" tool in the menu. Use it to cancel the password.
When you forget your login password
(valid only when the username is not Administrator),
press the key F8 during startup to boot into safe mode,
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Use administrator to log in,
Because when installing the operating system, this user's password is usually empty.
Then directly delete the password of the user who forgot the password in the management->users group;
If the username is Administrator, it will be more inconvenient
Use Boot the dos CD into dos,
Then enter the command: copy space c:\windows\repair\sam space c:\windows\system32\config\sam press enter then reboot to enter the system; or reinstall the system.
Use "administrator"
We know that when installing Windows XP, you first log in as "administrator" by default, then you will be asked to create a new account. so you can use it when you enter Windows XP. Create a new account to log in, and only the created user account will appear in the Windows XP login interface, and "administrator" will not appear. But in fact, the "administrator" account still exists, and the password pass is empty.
Once we understand this, if you forget your login password, on the login interface, hold down Ctrl+Alt keys, then press Del key twice, l The classic login screen will appear at this time. , type “administrator” in the username, leave the password blank,then change the password.