Windows 7 - Windows Failure! PLEASE HELP ME!

OK,
I have a Acer laptop, running Windows 7, I install it, and three days later, boom, it crashes... I reinstall it, and a couple of days later, it does the same thing, it lags, then crashes. I need to fix this. I been trying to for a year, Star-Tech said it was a bad harddrive. I doubt that. But everytime I make a thread, someone tells me to install these drivers, I do that, and it STILL crashes, so it's not those either.. I am desperate.. I can't risk having to reinstall windows again.. please. It's doing it right now btw, but I am using safe mode.. so please help me!

Hello Kyle, we're happy to help but really need more info.... Please follow these instructions as best you can?
Blue Screen of Death (BSOD) Posting Instructions

This forum is the best for Windows 7.... You'll get it sorted!

OK, sorry I didn't reply earlier... I had to reinstall Windows 7 again.. wahh :c
Well lemme finish installing these updates, then I'll do that, again.. thanks(:

Check the hard drive with the manufacturer's diagnostic tools.
Hard Drive Diagnostics Tools and Utilities (Storage) - TACKtech Corp.
HD Diagnostic