So, to begin, thanks for taking a look at this. I appreciate anyone giving me any help they can. I figured if anyone online could help me, it'd be you guys.
My problem happened like this. I ran Spybot S&D because it'd been such a long time since I had and I'm a bad person. It ran, I fixed the problems and immunized. Then! it wanted me to update. And I did. When that was done, I think I turned off my computer and went about my day. Cue me returning to it later that evening. I log on, it gets to the wallpaper, then logs me off. I proceed to do that a few more times before trying with the guest account. No luck.
When I Googled my problem, it seems like a lot of people have had it. It's either from a malware problem OR from the Spybot update. Apparently when you update it, if you don't uninstall the previous version and delete al of the folders, it breaks something in the registry, which is what's giving me my trouble. This has been the most informative link so far.
All of the solutions call for a CD of some kind; the OS CD for a repair console or another one that allows you to get into the registry without logging in to your computer. I may have misunderstood this, but please correct me if I have. So here's where I come to you.
My CD drive hasn't worked for some unknown amount of time. I did try to use the Windows CD and the computer started, the drive light flickered and flashed, and it spun around. But nothing. What can I do, if anything at all? Or should I just kiss everything goodbye and save up for a new computer?