This happened to this PC before but it strangely corrected itself after being unplugged several days and has worked fine for the past few months. This is a self-built. Turns on fine, all LED's light, fans start and drives spin up. Get a good load of video then POST continues and I get the single good POST beep. Screen then displays processor info correctly and then system freezes. No RAM count begins and I can't enter the BIOS. I have tried unplugging all IDE's, clearing CMOS, remove MB from the case, removed all cards except AGP as it has no onboard video and swapping RAM. None have worked. The specs are Windows 2000 Pro, socket 478 Soyo board, 2.6 Intel Celeron 400fsb, 350 watt Antec power supply, 2 CD-Roms, 2 hard drives and the floppy. The only things I have not tried is swapping the CPU into another board or swapping CPU's as none are available to me. This board doesn't support the newer D's 533 bus speed. Any ideas as I am beginning to suspect either the board or CPU and just rebuild it.