Maybe not, hopefully, someone's expertise can get me out of this.
To begin, my computer, given to me by my grandparents is no prize machine. It's an emachines computer with a 17" CRT monitor.. but I guess that's irrelevant.
I have 256MB of RAM, on about a 40GB hard drive. I'm running Windows XP Professional with Service Pack 2.
I tried, over and over again, using these anti-spyware/malware/viruses:
AVG Anti-Spyware
ashampoo Anti-Spyware 2
Ad-Aware 2007
a-squared free
CounterSpy
SUPERAntiSpyware Professional
ATF-Cleaner
HiJackThis
HouseCall
Spybot S&D
Advanced WindowsCare V2 Personal
avast! Antivirus
Now, my problem: I have no explorer.exe
I have no start bar, no icons, and the only way I can use my computer is through the "CTRL-ALT-DEL" function, and opening a program from there. My desktop background, however, does load fine. I'd consider myself somewhat knowledgeable in the way of computers, though I am no pro.
To be totally honest, I think this resulted from a keygen I downloaded online. I have the Sims 2, I lost my booklet, I found and downloaded the keygen, and it gave me a code that worked, and I used it; I then deleted the keygen.
Seriously, any help would be appreciated. Thanks.
EDIT: BTW, I have tried restarting explorer.exe manually. My start bar will work for about a half of a second, then will close, along with explorer.exe