So today i upgraded my case , power supply , and added a ram stick it and when i turned it on with the graphics card in it ( graphics card fan was running ) it did not boot up . So then i took out the graphics card and used my apu graphics and it boot up just fine , ive been using this graphics card for about 11 months now and havent had any problems with it until now this is the pc i had http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03499587&prodSeriesId=5295962 i also have a asus 6670 in it as well , thanks