I am using a AMD Sapphire 7950 vapor-x edition for year without any problems. But before two weeks it started making really odd sound, so I open my case and found that it was coming from the cooling fans and I gave them a slap, after that like a magic it was working all fine. But today one of them stopped moving completely after that same odd sound. I can spin it with my fingers so there is nothing which is stopping it from moving. Now I don't have any idea what to do. I can't turn on my computer. Any suggestions would be great.