I have a PC that I have built and is now giving me fits. It ran great for about 6 months and now I can’t even get it to boot. I have an EPOX 8K7A+ motherboard, Athlon Thunderbird 1.333Ghz processor, Crucial 256MB DDR memory. When I power up I get ononboard BIOS code of C1 which according to EPOX is a memory issue. However, I have gone to Crucial and replaced the memory. Then after talking with EPOX I replaced the BIOS chip. Then after replacing the BIOS chip I replaced the motherboard. Next I went to AMD and they replaced my processor. It worked for about a day or two. Now it just gives me continuous beeps on boot up. Could the power supply be causing these problems? I can yank EVERYTHING off the M/B (video, NIC, HD) and I still get the same error code. I am totally stumped. Any suggestions?