A few days before my pc didnt showed any display. Even if both the led of graphic and motherboard are lit and cooling fans are working there is no display. Then i cleaned my complete hardware and tried but no joy. Then i interchanged ram , put only one then other and after all sorts of combinations i found out that if i insert ram in the one specific slot and start the pc there is no display. I have only two slots of ram and 2 rams of 4gb ddr3 and now i can run my pc only on on ram of 4gb which is why i am not satisfied.Please Help.