Hello, my brother have problem with his PC... His monitor resolution is 1440x900, but he dont have this resolution in Settings, he have a blurring image. He tried his monitor on my PC and all is working well. We thinked it was GPU, so we buyed one, i think its GTX 650, and still there is no his native resolution, we tried Custom Res. and same, we reinstalled Windows, drivers, everything. . So what could be the problem ?