Might i ask how SP3 was slipstreamed in?
Did you use an addon pack?
Are you using a language OTHER than english?
I slipstreamed the english SP3 installer into and SP2 install disk no problem. nLite handled it like a charm.
I'd make sure you've got SP1 AND sp2 before slipping SP3 into the mix.
Also, try a perfectly stock XP install (no addons, drivers, options etc) with SP3 slipstreamed in and see if its a driver conflict.
As for the fact its an AMD, I cant help. I'm running an intel and I'm testing on VMs anyway