a virus? i doubt it, i have the same things running on it now that i did 3 months ago, even a year ago for that matter.
cpu usage, i went from a Pentium 4 to a phenom x4 955 so cpu usage there even at its worst, when encoding a video, it uses 70% of my cpu (im guessing what holds it back for using more is the encoder and my video card) but even than, at 70% usage, its still faster then my p4 ever was.
as for background tasks, my computer is close to clean in that regard. if there is a n actual number you want tell me where to look and ill give it to you. there are some things there that are just their, i got a quad core, and its goes so fast almost all the time that i never saw reason to optomise anything.
i dont think its the bios either, the hard drives were working fine for weeks until the f:\ error, and possibly the c:\ having an error too, but that may have just been the f:\ having an error and me noticing than that there was also a c:\ error.
hell everything could be the f:\ drive.
i don't want to defrag anything and usually don't because of space problems, but i also don't want to defrag if there is a chance that my computer could lose data because of it, i want to avoid that until the f:\ problems are found out.
just so you know i haven't done anything to the drives yet, i want to wait till i know exactly what im dealing with before that happens.