Help! - Weird letters in BIOS and Windows won't load!

I don't really know how to search for this issue so I'm sorry if it is a repost but I didn't see anything about what I am experiencing.

Yesterday my computer froze randomly when I was playing a video game so I restarted my system thinking nothing of it. When the BIOS loaded the left side of the screen showed some verticle lines (about 5 or 6 of them), I thought that was strange, then the next screen is where it shows detecting my drives and shows what it is loading. This time the left side of the screen had jumbled letters everywhere, it almost looked like the left side of my screen was either turning into a Matrix computer or stroking... The right side of my computer looked normal, letters and numbers where in their normal spots but the left side is illegible. It still loads as if it is going to boot normally except for the weird graphics, then it goes to the "loading windows" screen and everything looks perfectly normal, no lines on the screen no jumbled letters or anything so I was thinking ok maybe it was some freakish error. Right when it is about to load windows and give you the "Welcome" screen, the screen just stays black and wont load, doesn't reboot or anything just hangs there.

I reboot again and it gives me the windows failed to load properly last time pick safe mode, safe mode with networking etc.

All versions of safe mode work, everything on my harddrive is still intact, when I load safe mode with networking I can access the internet but it just won't load normally...

All of my components seem to be fine but they obviously aren't... I'm thinking the BIOS is screwed but I don't have a floppy to flash the bios, and the windows bios flash program that Gigabyte has wont work, it errors on the first .dll it tries to load...

Any help would be awesome!!!


SPECS:

Gigabyte mobo - GA-N680SLI-DQ6 (rev. 1.0)
processor - core 2 duo E6600
RAM - G.Skill DDR2 PC2-8000 (6 gigs)
HD - WD Raptor 150gig 10k rpm
Windows Vista 64 bit

would that stop windows from loading normally, but have no issues in safe mode?

If your video card was working properly, you wouldn't get garbage on the screen at POST or when entering the BIOS. If the BIOS was bad, the system definitely would not POST.

You could reload the drivers for your video card, but that won't fix the card. Is the fan on your video card working? Do you get garbage on the screen when the system has been powered off for several minutes?