It is a Compaq Evo with 2.2 GHZ P4 worked well untill the other day when it wouldn’t boot up my drives are working and I hear the fans I am guessing it’s Video or a Power issue. One thing I find odd is The switch does not work I have to plug and unplug the Computer that is another reason I am thinking it is a power supply issue. If anyone can help or at least tell me what the BIOS Beep codes are for a Compaq Evo that would be greatly apreciated.