I have an AV8 SLI that had the same symptoms (POST code "9.0."). It had
been working fine ever since my original build about 4 yrs ago, then this
came up (out of the blue). The MB LEDs lit up fine, as usual and the fan on
the CPU (Athlon 64X 3800+) spun up as usual, so I supposed that the problem
was not a dead PSU. I removed all my PCI cards (except my PCIe video card)
and disconnected my LAN connection, but still no change. I was stumped!!

But, next I removed two sticks of my RAM, tried it again, and it booted OK.
Then I removed the 2nd pair of sticks, put the 1st pair in the slots that
the 2nd pair was using, and it booted OK, again. Then I put the 2nd pair
back in the slots where the 1st pair was originally, and, again, it booted
OK. Conclusion: What the f_ck ? Guess the mem. sticks wanted a vacation!
(Or, maybe there was some 'crud' at one of the RAM-stick connections, that,
by way of removing it and re-installing it, the 'crud was cleaned off the
connections. How this could happen is a mystery to me, but ... ??? ) Try
it; it may work for you, too. -- Bob


"hal1707" wrote in message
ups.com...
I have built a brand new system with an Abit AV8 pro motherboard and an
Athlon 64 3000+ Venice skt 939 and it will not post.
I have tried everything including different ram and vga cards etc. also
clearing the cmos.
There are no other items connected and it still does the same. I get
the guru code 9.0 on the motherboard display which is where the bios
should take over and then it starts a two tone beeping sound like a
siren! I have no way of testing the cpu on another board.
Could it be the Bios? HELP!!
Abit AV8 Pro mobo
AMD Athlon 64 3000+ Venice cpu (Retail)
Mercury 400w psu