Asus A7N266-C problem

[ragtop]

I have an Asus A7N266-C that runs fine with an old Duron 750 processor.

Recently, I tried to upgrade it with a T-Bird 1.33, but it wouldn't POST. I then flashed the BIOS to the latest version and tried putting an XP1700 in it - again, no POST.

I've tried clearing the CMOS, using jumper-free mode, manually setting the jumpers, even underclocking the CPU/memory busses to 200/200 but no matter what I do, it won't POST with the newer processors. (but it still works with the 750)

Right now its sitting on the bench with just CPU, RAM and Vid card. When I hit the switch, the fans power up but thats it - no video and no beeps.

Any suggestions to fix this before I decide that its just a bad MB??

[beppodmime]

What speed is the memory you are using in this system?

[ragtop]

Memory is Kingston PC2100 (I've tried two different sticks - both work fine in other machines at 266 bus speed)

[cyit0n]

try flashing the video card BIOS, if you're not getting an beep codes, it may well be an incompatability there.

[ragtop]

Interesting thought, but I'm not aware of any BIOS updates for a TNT2 M64 video card (thats what I typically use as my "troubleshooting card")

I'll try a different card when I have a chance.