All was fine until we had problems getting a high end game to run (very graphics intensive Rise of Flight). We gave up on the game, and uninstalled, but now the graphics are messed up - ie, everything runs slower and is pixelated. Now, no other games run ( MS Flight Simulator, etc.) and give an error "Hardware acceleration needs to be enabled." Dxdiag shows everything is fine, but the enable DirectDraw hardware acceleration buttons are grayed out.
I tried the troubleshoot tab in graphics properties, and played with the slider bar for full or no acceleration, tried unchecking the enable write combining box, and I tried reinstalling the graphics drivers, a system restore, and even the OS repair option , but nothing worked.
I thought of pulling the graphics card, enabling the on-board Vanta driver and starting over, but now that has disappeared from the device manager list. I reinstalled the chipset drivers, but it's still not listed there. Did the motherboard graphics get fried somehow? Is turning on the hardware acceleration in some other setting somewhere?? What else can I do?
Thanks in advance...