Today i turned my computer on and it booted normally (mobo logo showed up, loading bar showed up, bios, everything) But when it came time to show the welcome screen the display went all messy and blurry

I tried looking for loose plugs and stuff like that but everything seems to be plugged fine. (I can't open up my case because i still have a waranty :/ )
Weird thing is, while in Safe Mode everything shows up fine so that means no hardware is damaged? I tried using System Restore to restore to an earlier date but nothing worked. Tried re-installing my display drivers and that didn't work either. Tried booting Linux and again, booting was fine but when it came to welcome screen display got messy.
I am also too scared to try and re-install my OS because if while installation the display problem occurs i won't be able to finish the instalation and then i won't even be able to use my computer at all because there won't be no Safe Mode.
Specs you may need:
OS:
Windows Vista Ultimate x64
RAM:
3GB
DirectX version:
DirectX 11
Graphics card:
Nvidia GeForce 9600 GT
This is very weird, please if any of you have experienced this or have any idea what is causing it please post.
Thanks in advance.
P.S. Sorry if this is the wrong board
Edited by mitk0o0o0, 26 June 2010 - 11:03 AM.