Good afternoon, I'm attempting to upgrade from 32 Bit Vista to Win 7 32 Bit, however during the final stage of the upgrade process my Monitor turns black, and goes into power save mode. The monitor (LG Flatron HD) is connected to the PC through an HDMI cable, connected to 2 HD 4800 ATI graphics cards in CrossFire. Before starting the upgrade process I downloaded and installed latest video drivers for the graphics cards. From reading the threads all I can think to do is to go out and by some D-Sub connectors and see if it works, compared to the HDMI. Any other recommendations?