I'm running Windows 7 through ATI HD5400 into HP2335 monitor. I can manually switch betwen an analog DVI and a digital DVI source on this monitor.
Both BIOS and POST sequence work fine through the digital DVI (DVI-D) However, while Windows is booting up, just after the Windows logo is first displayed, the screen goes blank when using a DVI-D (single link) cable.
However, I'm now using a DVI-I (dual link) cable and I've noticed a change. When booting up and the screen goes blank (using digital DVI source on the monitor) I can switch the monitor to analog DVI and now get to see the desktop.
Is there any way to force Windows 7 or the ATI drivers to stick with the (better quality) DVI-D output/connection?