CMOS stands for Complementary Metal Oxide Semiconductor. Even though it’s a small chip on your motherboard, it does a lot more than you might expect. First, let’s clear up a common misunderstanding: ...

If you've locked yourself out of your Compaq Presario by an unknown CMOS password, you can reset the password -- along with all other CMOS settings -- by removing the computer's backup battery for ...

Once you are sure that the positive pole of the battery is visible, gently remove the battery, taking care not to touch any other part of the motherboard. Go to your local tech parts retailer, and buy ...