Re: Computer turning off and on
Turn the PC off and unplug it from the wall. Remove the side panel and look at the bottom of the motherboard for the battery, it's round, shiney and about the size of a nickel. Right below the battery you should see a jumper, it's connected to 2 pins and one pin is exposed. Move the jumper to the exposed pin + the middle pin. Leave it there for 10-15 seconds and then move it back to it's original location. This will reset the bios to it's original Default values.