CPU running at 100%

M

MrKevin

New Member
I have an XP Pro SP3 system thats been running stable for about the last year. I recently swapped out the motherboard and ram from another good running computer that had been upgraded (but kept the original P4 3.4 Hyper threading socket 478 CPU). The old MB was an ASRock P4VM800 and the new one is an ASRock P4VM890 - the new one has PCIexpress video and the old one had AGP 8x (hence the upgrade). Nothing else was changed (except the video card - both are ATI Radeon X1650).
Since the upgrade 1 of the 2 CPU's (hyper-threading) is constantly at 90-95% while the other is at 2-5% at idle. Previosly both were 2-5% at idle. There is a very noticeable slowdown in loading programs and running video. I've done the following:
-Loaded new motherboard drivers from ASRock disk then again from website
-Task manager doesn't show anything using high CPU besides system idle process
-cancelled all start-up commands in msconfig
-done a diagnostic start-up with msconfig
-deleted all old non-used devices from device manager
-Run RegCure registry cleaner
-checked MS Windows Live One Care for viruses, malware, spyware (have had MS One care for about 1-2 years)
-I can't do an XP repair from the XP install disk because it tells me I'm trying to repair a newer operating system (SP3) than is on the disk (no service pack)

I'm sure I've done more but nothing seems to make a differance. If at all possible I would like to avoid a clean XP install or swapping the original MB back in. Any suggestions?
P.S. Sorry about the long post - it's my first one here. Thanks for reading.
 
You will most likely have to back up any important data and do a fresh install. Most likely this new board has somewhat different hardware than your old one and its not playing nicely with your processor.
 
I would have thought that installing the new MB drivers and deleting the old ones from task manager would have taken care of any differances with the motherboards.

Are there other items within XP that could still be configured for the old MB?
 
Its always better to do a clean install after a board swap with different chipsets. As far as trying to do a repair install, just slipstrean SP3 to you XP CD. Use nLite
 
Any good instructions/tutorials for slipstreaming?

Edit - I did a google search and found a few good sites with instructions. Thanks.
 
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