"Projector" type sound coming from Alu. iMac

So just this Saturday I purchased a brand new 24" Aluminum iMac with Leopard. When I got home I turned it on and noticed that a sound is coming from the lower portion of the iMac, it sounds like an old video projector running . I ran TechTool Deluxe (came with AppleCare) and it says there is an error with the VRAM. I restarted the iMac and still nothing. I called Support and they said to take it to the store.

I was wondering if this is a common issue and if there is a way to fix it without having to go to the Apple Store. It would be nice to fix it at home and get it over with, of course... I don't want to void the warranty after paying for AppleCare

Thanks
iJesus

 

No one?

 

Thanks guys, I appreciate it.
Hopefully they'll do a swap
I DON'T want to wait for them to fix

 

Thanks Sun Baked...

here's an update

http://forums.macrumors.com/showthread.php?t=381194