Question about Computers & Internet
The simplest way to remove a BIOS password is to simply remove the CMOS battery. A computer/laptop will remember its settings and keep the time even when it is turned off and unplugged because these parts are powered by small battery inside the computer/laptop called a CMOS battery. If we pull out this battery, the computer/laptop will forget alot of its hardware settings, including its BIOS password. This should not be performed on Laptops if you are not experienced working with laptop hardware.
Anyway, open up the computer case using a screw driver and locate the flat, circular and metallic CMOS battery. It should look something like the picture to the right. Some computers have this part standing upright. Once you have located it, observe how the latches are holding it. There are many different ways to remove a CMOS battery but the most common way on newer computers can be seen in the picture below.
Make sure to power down the computer, unplug the power cables and unplug any USB devices if they are powered. The computer must not be able to get power from anywhere for this to work. Take out the CMOS battery and wait 10 – 25 minutes before putting it back in. The reason for this wait is because the computer can still store power in its capacitors even though everything is unplugged. The waiting period allows enough time for them to discharge.
Plug everything back in, power up the computer and enter the BIOS again. If everything went well there should be no more password. In some cases, if you get weird error messages during bootup now, you will need to goto “Load BIOS Defaults” in BIOS and save the changes to fix them.
Posted on Sep 13, 2010
Please check this link and go through the article to have detailed idea to bypass bios password in your laptop :-
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Posted on Sep 13, 2010
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Posted on Jan 02, 2017
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