Problem with FSX after upgrading to GTX780, I half just upgraded my X87 mother board with EVGA GTX 780 graphic card. Monitor works fine but when I launch Flight Sim X the programme won't start keeps telling me that the graphic card is not suitable for FSX - that was the only reason I bought as it was recommended as best card to FSX. I updated drivers from Nvidea, repaired FSX with original software but no joy - I did load up Direct X 10 which may have caused the problem but then downloaded Direct X 9 as a possible solution - still not working any suggestions appreciated.