I know next to nothing about computers, so please forgive the vague terms and the general stupidity. :)
I'm using XP, my laptop is an EeePC, and I have Comodo Firewall with Defense Plus, ThreatFire, Panda Cloud Antivirus, the free version of Spyware Doctor and Prevx running, if that helps.
Somebody pulled the plug while I was installing updates on my computer. When I turned it on again, it had a black screen, jargon appeared that I thought was the system trying to recover (I had, uh, pressed Enter all over, in an attempt to, uh, get things going; I didn't know if it had crashed or not, and I wanted to find out as quickly as possible if it did) and eventually the commands to start it turned up. I chose F2, which I understood as "start using default settings", and then I got everything back in good shape. What I want to know is what problems do I expect from my PC now, if there are any? How do I go about checking those? All I know so far is checkdisk.