My friend was trying to install RAM into someones computer and now whenever we turn it on we get three long beeps (each beep 1 second at least). All I know about it is it's a Gateway, has an intel pentium 4 processor, was designed for WinXP and originally had 512 MB of RAM (2 256 MB 133Mhz Crucial Technology, Division of Micron). Seagate 20 gb internal hard drive. I tried everything; switching RAM slots every way (3 RAM slots on board), disconnecting all removable storage devices (CD, floppy + drive), removed video card, ethernet card, etc. I tried resetting the BIOS... which did nothing. Nothing is shown on screen, just the moniter error no computer is connected. The only time the beeps don't sound is when the motherboard is not powered (no ****). I looked at the BIOS error codes for gateways, and it says 3 long beeps is a keyboard error, although I doubt that.