M17x R3 -Ati fire m8900 dead?

Hi, last day played C@C and got freeze system. After restart the same, x times repeat it and try it recover.
I tried repast gpu (m8900), but problem still. Now i can't boot with dedicated gpu. Laptop run only with IGP. Ist there any chance fix this card? Is there cheapest way to buy new card i have? ( 6870m or?)
Thx