Yesterday I was building 10 systems with an Azza kt333 board and Athlon Xp 1900+ chips. First 9 , no problems. On the last one, it would power up for 2 seconds and shut off. So I thought it check for a bad chip. I put in a Duron 850 to test it, and it POSTs. Put a different XP 1900 in, no POST. I cleared the CMOS, and looked for any other jumpers I thought would make a difference and still nothing with the Xp chip. Any ideas?