A7V8X unable to get past POST

Ok here it is.. The machine had been running fine for years. The first
symptom was no boot at all and the verbal error code said "system failed VGA
test". Replaced board with a PC Chips M848A and used all of the same
peripherals and she ran fine. Trash board BTW. Bought 2, one DOA, other
lasted long enough for replacement to arrive. That one has now failed too.
They were being used in 2 different machines so power supply etc kind of
eliminated unless both are bad. And one of those is a brand new Thelmaltake
430W so really unlikely.

Because of the second failure I decided to look more into this board. The
CMOS battery was low. I reset the BIOS and put a new battery in and she
makes it through BIOS setup fine. However the boot will not go past "System
now booting from operating system". Right after that message is heard the
machine reboots over and over after the message each time.

All of the peripherals have been tried on the working PC Chips board and
another A7V8X and both run absolutely fine. The only thing I see as odd is
the Radeon 9800 Pro which I know to be a 1.5 volt AGP 8X card causes the red
led to come on. Actually the LED is on with no AGP board installed too. The
manual says that the system will not power up if the LED is lit yet the
system does come on and go through BIOS fine. The same card works in my
other A7V8x and my A7N8x without those LEDs coming on.

Could the motherboard have a bad video section and cause this? I gotta
think so but where the book says it won't even power up I am not sure. And
who has a PCI video card still? I tossed all mine 2 years ago. Thanks for
your insights and if there is a simple fix please let me know. I have 2
perfectly good AMD XP processors that do all we need so I would rather not
have to upgrade just yet.