Note: If you didn’t get a code when the system was disabled, your computer may use its own serial number to generate a backdoor password. Click the “More details” link at bios-pw. org/ and follow the instructions to download and run the correct script for your computer’s manufacturer.
If none of the passwords listed here unlock your computer, you’ll need to try the next method.
The CMOS battery looks like a watch battery, and it powers the motherboard even when the computer is unplugged. This might be how the password is stored on your motherboard along with the system time and your computer’s BIOS settings. Removing and reinserting the battery will clear all of these settings.
Make sure that the power cable has been detached. You may be able to perform this method on a laptop as well, but it will require removing the protective case from the back of laptop. You will usually need to remove all of the other panels as well as the battery to get access to the motherboard.
You may find it easier to lay the desktop on its side on a table or workbench so that you can easily access the inside without having to bend over. Click here for more detailed instructions on opening a laptop computer.
You can quickly ground yourself by touching a metal water tap.
Note: Some batteries may be soldered to the motherboard and are not removable. If this is the case and you’ll have to use a reset jumper, see the next section.
If the password still has not been removed, then that means that the BIOS password can’t be reset by removing the CMOS batters. In this situation, follow the steps below.
The jumper may be labeled CLEAR CMOS, CLEAR, CLR, JCMOS1, PASSWORD, PSWD, etc. [4] X Research source If you don’t have a reset jumper (and not all computers do), and you’ve tried the methods above, then you’ll have to contact the manufacturer.
For example, the jumper is covering pins 1 and 2. Move the jumper so that it is covering pins 2 and three. If there are only two pins available, removing the jumper completely will reset the password.
