Well, it looks like I need to buy a new hdd...
I have tried just about everything and now my comp is just more messed up. I tried everything possible to reformat and it only made my comp worse in ways I can't really explain. Let's just say I've gotten to the point where the only way I can truly get rid of all this and start over is to get a new hdd. And on top of that, I still have my ram problems and I don't even know how I'm supposed to tell my dad all this. I'm not a very happy person right now...
EDIT: BTW, thanks to everyone who tried helping me.
ASUS M4A89GTD PRO/USB 3.0 | AMD Athlon II X2 245 | 2X2GB A-DATA DDR3 | Western Digital Caviar Blue 500GB | OCZ StealthXStream 500W | Logitech G500 Mouse