I recently purchased a custom built gaming pc and received it yesterday. The machine has an AMD Radeon HD 7870 but when it comes to checking if my pc can run a game it fails every test, even basic games like team fortress 2 which it can obviously run, it can even run planetside 2 with no problems on high quality. So has anyone got any idea why can I run it is not correctly recognising my graphics card (could it be some sort of driver issue). All advice is appreciated.