There are a few methods to reset the bios. The easiest is to shut down the comuter (Start, shut-down), locate the on/off switch on the back of computer and turn it off. Open the case panel and look for the battery (flat, 3v) similar to a watch battery. Remove the battery for about 5 to 10 minutes. Replace the battery, flip the on/off switch to on and start the computer. Bios must be reconfigured.