Brand new Gfx card done already?

[Da Outsider]

Finally got my first ever self built rig together last week after much pondering and lurking these forums and everything was going great until I turned it on this morning and I'm getting all these weird lines running across the screen and once I get to the desktop the computer just shuts down or resets (fine when I boot into safe mode - still get the lines across the screen). Searched google and it seems it's most likely my video card overheating Can anyone confirm this for me, I've barely gotten 15 hours out of the thing yet and it's packed up already?

Here's a pic of the lines:

 

[Da Outsider]

Looks like RMA time mate What care is it mate?

Looking that way I was using an All-In-Wonder X1800 XL. Getting a replacement's gonna be a bitch too 'cos I've heard ATI are a bit pants for that sort of thing and the other option is where I bought it -No competitor talk please!