Re: AMD Radeon HD5450 Issues
I think the problem is clearly with the card. It is extremely unlikely that two very different OSes would create the same symptoms if it were a driver issue. You have taken all the steps needed to isolate your problem, and everything points to getting a new card (or exchanging if it is still under warranty).
Newb: How far must I jump to clear the ledge halfway down?
Guru: It's bad to jump off cliffs. Let's look at better options.
Newb: Stop harping about "best practices" and just tell me.