A friend gave me his son's gaming rig to try and fix, it's a couple years old and suddenly when powered on it beeps continuously for 10-15 seconds and then turns off and restarts. A Google search seemed to indicate that this problem is most often associated with a ram problem so I bought a new pair of Corsair Vengeance ram compatible with this system and tried that (the system has a pair of AData AX3U1866W4G10-BGV 4gb moduls) and I had exactly the same problem. I tested the PSU with an Antec PSU tester (the system has a Corsair CX600M) and all voltages appear to be in acceptable range. I tried resetting the CMos and moving the ram from one pair of dimm slots to another but still the same problem. A little more Googling and I found a suggestion to try ram singly rather than the pair and the system appears to be able to boot with either of the AData modules in any slot but add the second module and the problem happens again. I checked the bios (while booting with a single module) and the motherboard had an older F8 bios so I flashed to the latest F10b and tried again but still the same problem, either dimm is fine by itself and if you put in the pair the system won't boot. I also removed the standalone video card and wireless card to see if that was causing the problem but still the exact same issue. Has anyone seen a problem like this, any idea's how to fix it?