Hi all I've just bought a new motherboard & CPU (Gigabyte nforce4ultra & AMD 64X2 - 4600(939) ). I put it all together and everything was fine, it started into windows XP as normal. However occasionaly when I start my computer the post beep continues forever until I restart the computer. The real strange thing is that the CPU fan turns off & the beep continues but it still loads windows XP perfectly & runs as normal. My PSU is 400watt, 1GB corsiar memory(512 X 2), Radeon X1900GT.