stock hp pavillion a6000n
as soon as i turn the computer on, the HP boot screen is jumbled. at first it would occasionally start, but now won't move past it. going on that (because i can't get anything to move at all) i'm assuming the onboard graphics controller is failing. can i solve it just by getting a new card? (if so, some basic PCI-E x16 suggestions would be helpful, if you do that)