100% highest active time on windows 7

if you replaced the hdd in the bad pc with one from one of the good ones and the problem did not 'follow' the harddrive then it has to be a network or memory issue.

Ahhh, no answer on how he fixed it. That's what I've been finding on the web - people have this problem but there never seems to be a specific fix.

I have the same problem on my P6T Deluxe V2 machine and it affects only the C:\ drive. Narrowed that down using perf mon and setting % idle time, % disk time and disk queue length counters. Disk queue length never gets that high but % disk time counter goes from 0 to 100 to 0 in a perfect triangular waveform until the episode is over.

I pulled the C:\ drive out, it's a WD Veloci and it passed the extended drive test from WD. Using resource monitor nothing seemed to be hogging the drive that I could find. Running these diag tests is tough because I would have to keep my eye on the HDD led and once it went solid start, the test. If I got it right the test would start, if too late nothing would start as the machine is locked up during the episode.

I'm thinking if it was the hardware SATA controller it would affect all drives? Going to do a clean install of W7 and see what happens.

Anyone have any ther ideas?

I had the same problem.
http://www.tomshardware.co.uk/forum/299451-32-ahci-high...
For me the fix was to set the disk mode from AHCI to IDE in the bios. Other posts seem to be split 50/50 between it being a config/driver issue and a hardware issue with the disk even though disk diagnostics don't show any issue. In all the cases it seems to be an SSD and the disk seems to work fine as long as it is not used as a boot disk. I know this makes no sense - a disk should either work or not.
Mart