So my friend bought an EVGA GTX 750 TI SC GPU and a Corsair CX430 PSU yesterday to amp up his current pc. He has an HP Pavilion p6-2033w, we switched out the PSU and everything works fine. We put in the 750 TI and it wont load past the boot screen and the keyboard does not work either. I've been working on it for around 4 or 5 hours now and can't seem to fix it. Any help would be appreciated. (It runs Windows 8.1 Pro 64-bit)