L7S7A2 8x AGP non-compliant

I bought an L7S7A2 for my first system. When I upgraded my video card
to an ATI Radeon 9600pro 128, I discovered that the system becomes
unstable with AGP set at anything above 2X (yes, I did have to put the
old card back in to do this!)

any ideas would be good.


running windows xp profesional on
l7s7a2, Athlon XP 2500+, 512MB Kingston pc2700, Radeon 9600pro 128,
Sound Blaster Audigy Gamer, 40GB Western Digital HD (ATA/8MB buffer,
Mitsu cd and floppy. Power supply is ATX350 compliant (no name brand,
but tested by local shop and approved).