I've recently bought a cheap x360 controller adapter from dx. The problem is it does not work on my pc. It shows unknown device, I update drivers , and even after updating drivers it still does not sync. I've tried literally everything, EVERY possible solution on Internet, even using dualboot (windows 7 and windows 8.1 (64bit)), still does not work. It's a hardware problem, faulty receiver you might think, but on the laptop, it syncs instantly... I'm out of ideas... any help?