Windows Explorer crashing, adobe plug in crashing.

Im running windows 7 ultimate 64 ... I dont know totally system specs. It's a custom rig that I purchased about 6 months ago. I dont think the specs matter anyway because I don't believe this is a hadware problem, but a windows problem.

Ok,

So about a month ago I was unlucky enough to pick up a virus infection somewhere ... you know, those fake anti virus ones that totally destroy your system and leave you helpless. It started this whole chain of events that lasted two weeks and ended up with me running in safe mode for more than a week trying to fix the problem. I tried restoring my computer via system restore a few times and got an error every time - (which in turn 'damaged' my restore points so I no longer can use this option)

So, I figured I would reinstall windows and fix it. Sadly, whatever was on my comp as turned my CD drives (DVD and bruner) into dead weight - they won't read a thing. So I got Dlite and mounted the CD to a virtual drive and tried to install it that way, but for whatever reason it gives me an error and reboot and wont finish the install. It does however take me too the new log in screen, which gives me an error when I try to create a new log in for the new windows. I was able to get back into the old windows install and managed to delete the new one. Anyway .. I eventually was able to get spyware docter and a few other programs to run in safe mode and I cleaned the comp of all virus's BUT when I tried to run windows normally it would barely run at all. Start up was slow, browers would either not open at all of freeze when they did, and eventually windows explorer would just crash and I would have to reset to computer.

Eventually I just gave up and ran the comp in safe mode to do the things I needed to do. two weeks ago I decided to give it another go and try and fix it and when I loaded windows normally it ran fine - absolutely no problems what so ever. Then 2 days later it started the freezing and crashing again. I would run it in safe mode and run spyware docter (thinking I am infected again) and it would remove minor stuff like tracking cookies and such, when I would restart it would run fine for about a day and do the same thing again. I dont know alot of computers so please dont respond like a jerk and tell me I forgot this info, or that info. Im old, trying to keep up with technology, and I just want this thing to work.