If the machine has a BIOS password and you cannot boot and log in to it, you can bypass the password easily in several ways. The most common ways involve removing the CMOS battery, modifying jumper settings, and using various software utilities. If attackers are patient and have about 10 minutes to wait, they can remove BIOS passwords simply by removing the CMOS battery. At that point, the motherboard discharges its stored electricity (from capacitors), and the password is erased and the BIOS is reset to factory defaults.
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Read how to maintain and repair any desktop and laptop computer. This Ebook has articles with photos and videos that show detailed step by step pc repair and maintenance procedures. There are many links to online videos that explain how you can build, maintain, speed up, clean, and repair your computer yourself. Put the money that you were going to pay the PC Tech in your own pocket.