I recently bought a 1.4G Athlon to replace my broken 1.3G(100FSB). When I installed it and set the ram speed to 133/33 it all booted into windows, but crashed every time when it started to load the system tray progs and things like Zone alarm.
After some experimentation I found it was the RAM, it is clearly marked 133 and from a reputable source but it wont run at 133 !! Its not that that surprises me, but that it gets so far into the boot before it crashes.
Just thought I would share the knowledge.
*** edit: finger trouble ***
Did you tried different Cas settings or running it at normal speed and not at turbo (if the BIOS supports it) ?
Graham, you're not alone, I have 768Mb of PC133, it will run at CAS2, but not at 133, won't run at 133/CAS3, runs great at PC100/CAS 2/3
it will boot to win2k no problems, run for a while then reboot, or lock,
Funny thing is I couldn't install linux at 133, it would lock everytime. at 100 no probs, could just be one bad chip but next time I'm goin with High Q DDR. 768Mb of PC100 what a waste, it worked great for about 5 months, then degraded.....