Alright...
Well, I am using Windows XP Media Center Edition, Intel Pentium 4 CPU (3.40 GHz), and one gig of ram. Dell computer (can't remember the model). Reformatted maybe four or more times in the past, getting tired of it.
Anyhow. Me, my mother, and my father all use this computer. Lately my father had been getting blue screens (0xF4) when trying to do anything on his account, including a "CPU fan fail" error.
We went inside and cleaned up the place (reeeeeaaaaally dirty). The fan worked and it seemed to fix the problem.
Just to be sure, I ran McAfee Virus Scan. Suddenly, a bluescreen hit me that had been plaguing me ever since I got this computer- a 0x77 kernel error. It seemed that if I let a couple of months or a year pass and then scan I'd get hit with this, and while this is actually more of a nuisance since I use Firefox and whatnot, I'd like to be able to at least do a simple virus scan.
I tried deleting excess files and deleting and recreating the paging file- it helped it run a little longer, but to no avail.
So I ran CCleaner on my mother's account, went through clean.
Then I tried it on my father's account and got hit with a 0x7A bluescreen. win32k.sys was mentioned.
Also, I believe on both 0x77 and 0x7A errors, the status code is 0xC56, or STATUS_DELETE_PENDING. I have no idea what this means.
Any more info I need to give?