Try re-booting into Safe-Mode so it can see the hardware has changed. Rick Glazier From: "Gene Johnson" <[log in to unmask]> > Need help to set processor speed. > > I have an Abit-VA-10 mobo and I am replacing the Athlon XP 2000+ (1.67GHZ) > processor (AXDA2000DKV3C). I can only get the processor to run at 1.263MHZ, > this is at 100Hz clock in the bios. When I set the CPU clock at 133HZ, > windows XP starts to open but reboots at the Welcome screen. > > The old processor ran fine on this same mobo at 1.67GHz. The memory is PC > 2700. The NOSPIN Group is now offering Free PC Tech support at our newest website: http://freepctech.com