Greetings ,I bought faulty GTX 690 very cheap.When I put it in PC,card fan spins normally,and it starts to become warm after 5-6min,but PC won't boot and it will give me 1 long 2 short beeps,which indicates display failure. Since card looks brand new,has no burn marks and cooler was never dismantled,what could possibly go wrong with it so I can tell the repair shop to look for(GPU chip,VRMs,memory?)