I too was a victim of the dreaded hourly BSOD. I finally narrowed the problem down to 2 things Hard drive and controller. I have a Fujitsu 40GB hard drive and the Maxtor ATA/100 add-in card. The first problem was that I had an out of date driver on my Maxtor card. The second problem was that my hard drive was sending SMART failure prediction codes to the controller. With the version of the driver I was running, the SMART failure was not handled correctly, causing the BSOD. I went to Adaptec's site and downloaded the newest driver for my controller and installed it. The BSOD went away, and the SMART failure was logged into the event viewer properly. (It occurred exactly an hour after I rebooted from installing the new driver). Incidentally, after up[censored] the driver, I only got the SMART failure once and no more. The system ran all night without any more errors at all. Hope this information helps!!
