The other day my computer stalled while I was logging out from Windows. So I pressed the mainswitch. But as I started it again my display wasn't working. So I thought that the display had broken down, but I tried connecting the display to a friends computer, and it worked fine.

I then realised that the computer detected my TV (through the TV-Out obivously) as my standard display and it wasn't able to detect my regular display at all. So I reinstalled the drivers and Catalyst. It did not work. Once again Catalyst wasn't even able to detect my display at all, it only found the TV.

I then tried reinstalling Windows and ALL drivers, but that didn't work either. So my question now is: Is it possible that both my DVI-I connectors (digital)  in some mystical way have broken down? The GPU is working just fine with the TV-Out (analogue).
My GPU is an ATI X800XT.I forgot to mention that I manually installed the display with its driver, but Windows was still unable to detect it at all.Does another display work with that PC, besides the TV?It seems that the GPU can't SEND digital signals anymore. When I USE an RGB signal and cable it works fine. The weird thing is that my GPU only has DVI-I connectors and it's the very same connectors I use for the analog signal too (which works), though with an adapter. Really weird. Is it possible that I've managed to "turn off" the GPU's ability to use digital signals and if so, how do I turn it back on?STRANGE . . . if there was an option it'd be in the Catalyst Control Centre.
But I don't think there is.
Look in device manager - is your monitor listed?
And is it listed in the Catalyst Control Centre?
The display, you say it doesn't work with your PC - does it display anything, or just a blank screen?
Have you tried safe mode?The thing is that it works perfectly well with the analogue signal (RGB), which I'm using now, with a borrowed cable I might add. When I hooked the display up with my friends computer it worked fine with my own DVI-I (digital signal) cable. But on my own comp it doesn't work.

When I connect via the DVI-I connector the display isn't detected by Catalyst at all. But as soon as I switch to my borrowed RGB cable it detects it right away. Which LEADS me to wonder if I've managed to "destroy" the capability to send digital signals which, to me, seems very unlikely as it should prompt as an hardware error in Catalyst or in some other Windows software.

But how have I managed to do that...? All I really did was to turn the computer off with the mainswitch (with extended desktop enabled) when it stalled as I logged out of Windows. And it was after that that the GPU, when I turned the comp on again, detected the TV as the only available display.

But with the reinstallment of Windows and all related drivers that should've been solved, don't ya think?djannih......  Have you tested the GRAPHICS card in another pc to make certain it works ?  It seems to me that that should be done so that you know........


dl65