Bah
I've built up a new Shuttle system that seems to be running fine except it won't accept my standard (not AIW) Radeon 9700 pro. It worked fine with a Geforce 3 in it but as soon as the 9700 is in the slot the AGP Protection LED comes on and it won't power up at all. Nothing. It doesn't make any different whether the power connector is in or not - it always turns the warning LED on and stops it booting.
I've updated to the latest BIOS so I can't see what else I could possibly do.
Also the system seems to be rebooting itself a lot recently even though it's only running at stock speeds. Will a fresh install of windows help this do you think?