I have an hp h8-1234 And want to know if the gtx 750 ti card will be compatible with my pc.http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03359045&cc=us&dlc=en&lc=en. If i upgrade the bios will it work? I also have only a 300 watt psu. From what i hear this is one pain pc to upgrade its graphics card. I basically need the upgrade for the new xpac for WOD. As it is now it wont handle it. Please help. TY!