Hi there if you haven't read my last post here is the run down...

On start up my cpu is being picked up as athlon 1150MHz. If I run amdcpuid I get the same figure (1150). I then change the bios clock settings from 100MHz to 133MHz and then on startup I get the correct CPU info (Athlon XP 1800+) but then Windows s---s itself in huge way!!!! If I set it back to 100MHz everything is fine????

Does anyone have any ideas please!!!!!

Cpu maybe bad is it used? did you buy it on ebay say? if so its been over clocked and its been overheated and damage.

Sounds like flakey RAM or a power supply without enough power on the 3.3VDC rails to power the CPU at it's full rated speed. Download and run memtest86 on the memory or try another module.

I have just read about your problem I have a PCCHIPS 841 LMR Motherboard and AMD ATHLON 1600, and I have the same problem. And what makes me more worried is that a friend bought the same motherboard, and he has the same problem. Also we both use DDR2100 SDRAM. I know it’s a motherboard problem because I sent the CPU back to ebuyer and they said it was ok.

My settings are correct for the AMD 1600 CPU, but it still changes back to 1150mhz. I will just have to get on to ebuyer.com and ask for a replacement motherboard, not pcchips 841lmr. Sorry I can't help you, but I just had to tell you that it must be a design fault with this motherboard