definately a fragged HDD then. You've done alot of file installation and deinstallation, so your hard drive has gotten majorly fragmented, and your comp can't find some necessary files in that heap of compartmentalized code. Go into My Computer and right click on your C drive (your hard drive), click properties and click on the tools tab. Next, click the button which says "defragment now." Next, when the defrag window appears, click analyzation just for kicks to see how much of your HDD is in red (fragged), ignore windows when it tells you that you don't need to defrag b/c you do (I've had a seriously fragged HDD before where programs were screwing up and windows still told me that I didn't need to defrag

), and even if it seems that very little of your HDD is fragged, its that the files that matter for the installation are fragged seriously. This is because you've installed and reinstalled so many times that you keep reinstalling in a worn down spot of memory filled with lots of garbage from the previous installs/uninstalls, and the OS (doesn't matter that you're running WinSh!t, b/c a fragged HDD screws up any OS). ANYWAY, back to fixing you up. Click on defragment in the box that tells you that you don't need to defragment. Sit back, go grab a beer (or soda) and relax for a while b/c defragging is going to take a while, especially if your HDD is more than several gigs big (and since you just got your comp, I assume you have a HDD of over 20 GB in size or so). About 30 minutes at the least. Afterwards, run the update patch, and everything should go peachy. If it doesn't, do like what I said before and go b!tch at the tech support people till they help you.
Cheers,
~Sir Brass
