The best method to reset a BIOS password depends on what BIOS the computer has, but the general BIOS reset methods are collected as follows:
Method 1: Remove BIOS battery
The BIOS password is stored in CMOS memory that is maintained while the PC is powered off by a small battery, which is attached to the motherboard. Removing the battery will act to wipe clean all of the memory and settings in BIOS, including the stored password. Take the password away for 15-30 minutes or more, then put it back and the data contained into the BIOS memory should be volatilized. It is highly suggested that you should remove it for about one hour to be sure, because if you put it back when the data aren't erased yet.
Method 2: Use a Backdoor BIOS Password
Some BIOS manufacturers implement a backdoor password, which is one of the best methods to protect BIOS password which is provided for users to access the BIOS when the hardware is being maintained. No matter what the user sets the BIOS password to, the backdoor password will work.
Here are some well-known backdoor passwords:
* AMI Backdoor BIOS Passwords: including A.M.I., AAAMMMIII, PASSWORD and so on.
* Phoenix Backdoor BIOS Passwords: such as BIOS, CMOS, PHOENIX.
* Award Backdoor BIOS Passwords: including ALLY, pint, SKY_FOX, 598598 and so on.
Method 3: Contact BIOS manufacturer
besides, you can also consult your motherboard manual or consult the website of the BIOS manufacturer if you don't have one. For example, if you forgot Dell BIOS password, you can call Dell's customer service center for help. Of course, to verify that you are the owner of the laptop, Dell will require you to provide them with the Service Code and Service Tag numbers, both of which should be located on the sticker found on the bottom of your machine.