Radeon 4670 Card Has 2 DVI Outs But Only Works When One is used in Win7 x64
- by ssmith
I have an ATI XFX Radeon 4670 1GB video card in a Windows 7 Ultimate x64 setup. If I only use one monitor, all is well. If I plug in a second DVI cable to the card, both monitors go dark. I can get one or the other to display, but only when it is the only one plugged into the card. I'm really hoping for a dual-monitor setup here as that was the point of the card. I'm using ATI Radeon HD 4600 Series video drivers dated 11/24/09 (8.681.0.0) which are the latest from their site and are supposed to work with Vista or Win7 x64.
When the computer boots with both displays connected, both monitors display the inital bios and boot screens. The Win7 splash screen also displays, but by the time it goes to the login screen, one monitor is offline.