Fatality AN8 SLI Error Code 90

[ApolloHollister]

Hey guys i'm new to he forums and i've been looking around to for a solution to no avail. I was hoping maybe someone would know whats going on? Everytime i turn my computer on, it doesn't display any video and i get the code 90 on the mobo. Yesterday it was messing up to, hanging at the post screen, before it would display all the ide devices. Anyone know what might be up? my friend thinks it's the mobo. I have checked the ram, the cpu, the hdd's, and the video card.

Mobo: Fatality AN8 SLI
Proc: AMD 64 3200 Venice
HDD's: WD 200 gig
Graphics: Evga 6800GT
PSU: OCZ PowerStream 520w
RAM: OCZ PC4000 Gold Edition 2x512mb

[ABIT Sean]

It is possible that the motherboard is faulty. The only thing left to check is the PSU.

[ApolloHollister]

Thats what i thought, i will test the CPU, i just wanted to make sure it wasn't missing something simple. Thanks for the quick reply