I have a Win 7 32-bit setup on my desktop PC. A student at school uploaded a school-related file to our common work forum, and I downloaded it to my PC and started working with it. Turns out the file was infected with ... I don't know, a lot of really bad stuff.
It ended up shutting down Windows Defender, installing a couple of programs (Whitesmoke Translator, etc) and crud. I had MBAM and Spybot working on it, and could not get Win Defender up again. I know that technically you don't NEED WinD if you have anti-v and anti-malware programs that you update and use regularly, but still. In trying to fix things, I got several blue screens, to the point where the computer refused to start, and then went to repair itself. Told me that a critical file (rapzzmso.sys) was corrupted... fixed it, rebooted, blue screen.
When I got back in, I tried using sys restore back to the previous day, before I downloaded the file. That worked... sort of. Spybot comes up clean. I cannot start MBAM now, though. I click on it, and it hangs whatever window it was in (start menu or the shortcut folder the shortcut is in) for an obnoxiously long time, then a window pops up saying "dependency cannot be started" or something like that. It worked fine before all this.
Also, Firefox, when clicked, usually won't start, though the process appears in the task manager. I have to force it off, then click again before FF will start. Also, it will periodically hang and crash on various sites - I think due to the plugin container. I need to find a new browser, I think.
Spybot now will not let me update. When I click on the update button to get new definitions, it hangs and then goes to Not Responding and must be forced shut. I can run a check, which comes up clean, but that's all.
Something got majorly screwed up, and I'm hoping someone has ideas -- otherwise I might have to reinstall, and I really don't want to have to do that.