Might seem like a silly question, but I bought a 750ti 2gb (second hand) and when i loaded my computer (It had AMD drivers on it) my starting windows screen had white lines all over it, probably VRAM? I was wondering if it was anything to do with my motherboard or maybe not removing my AMD drivers prior to putting the card in?.. I returned it anyway because after removing the AMD drivers and installing NVIDIA drivers, my PC would no longer boot up. After starting windows screen it would blackscreen and then restart my pc.. ordered a brand new one this time, waiting for it in the mail... any ideas if I done something wrong the first time?