using the onboard graphics to see if your monitor works ?
I am completely stumped with this one and have tried just about everything.
First of all, I'm running windows 7
My rig is using a Geforce GTX 570, which I run dual monitors out of.
My main monitor is an Acer AL2616W, and my secondary is a Westinghouse L2210NW. Both monitors are DVI. I've had this set up for 2 years with no issues.
Two nights ago I shut my computer off as normal, turn it on the next day and the Acer is not detected and has no signal. There were no updates or changes to the computer. It just, apparently, stopped working.
Neither the nvidia control panel or the windows display control panel could detect my main monitor. The monitor also disappeared from the device manager.
I tried unplugging the monitor, flipping it off and on, switching the ports, switching the cables - nothing changes the situation. So you would think it would be the monitor, however, the main monitor still works when going through the boot screens with first powering on my computer. It isn't until the windows welcome screen that it shuts off and starts working exclusively on my Westinghouse.
I think it could be a driver issue, but I'm stumped. If I disable the nvidia driver so the display works through the basic motherboard display, the Acer starts to work. Of course since it's not using the GPU drivers, the resolution is super low, and no duel monitors. But the point is, the Acer works when the nvidia drivers are disabled. I have tried updating the drivers, rolling back the drivers, and updating to the newest beta drivers... nothing.
There is one thing that I haven't noticed before... in the device manager under display adapters it lists my Geforce, and also lists an Intel HD Graphics 3000. I'm not sure if this might be causing issues, but it shouldn't, since I disabled it. Enabled or disabled, it doesn't seem to do anything. But if I try to uninstall it, windows will automatically reinstall it. So it is currently disabled.
Other things I've tried that didn't work:
- Opening up the chassis, reseating the GPU into a different PCIe slot (also made sure the inside was clear of dust
- System restore
- Total system format, with clean installation of Windows (I was planning on doing this anyway to clean up some long built up clutter... hey my system is running great now at least)
It's hard for me to imagine it could be conflicting drivers with a fresh windows install, but I have no idea. I am completely stumped. Any suggestions?
Next step is trying another monitor, and if that doesn't work... another GPU...