AMD Beep messages

The beep codes on start up are normally from BIOS. What BIOS do you have?

One long beep on startup, repeated every few seconds, with nothin' else happenin', means a critical something attached to the motherboard is missing or not recognized. That could be memory, video, or even the processor itself. If all of those check out, sometimes resettin' the CMOS will correct the problem. Consult your motherboard's documentation at its vendor's website for instructions applicable to your motherboard - but often, disconnectin' the machine from power, removin' the CMOS battery, then holding the power switch down for 15 to 30 seconds, replacin' the battery with a fresh one, and powerin' back up will do the trick. Just sometimes, though, not always. If the memory, processor, and video card all check out and are properly seated, and a CMOS reset was no help, the problem most likely is a bad motherboard. It might be a faulty card or memory slot, or processor mount, but by the time you get that deep, replacin' the motherboard is prolly the most practical way to go.