So none of that did anything. I did as you instructed and nothing changed after it re-installed it. I tried specifying a path and it couldn't find the drivers I downloaded before.
I hope you didn't pay too much for this machine.
Is the guy you bought it from a good friend? Since he built the PC, he should know how to fix it and it might be worth your while getting in touch with him.
In any event, if I give a machine to somebody, I make sure it's in working order first. This PC that you have clearly doesn't fit that criteria.
Did your friend give you the Windows installation CD? If he did, you could run a repair installation which won't delete any files you've created yourself.
If he didn't give it to you, I'd be inclined to ask him for it if I was you.