Thank you very much for posting this, I had the same problem with Nvidia GTX660 and restart, uninstall hardware, update driver etc etc had no effect, unplugging the cable immediately fixed the problem. I should add that the monitor is a Dell 2412M and it now appears that the problem lies with the monitor DisplayPort firmware. Hope this helps someone.Thank you very much for posting this, I had the same problem with Nvidia GTX660 and restart, uninstall hardware, update driver etc etc had no effect, unplugging the cable immediately fixed the problem. In all case the monitors and computers had not been powered down at the same time.
I suspect I would have had the same results if I powered down both the computer and the monitor. I checked with two other friends that were having similar issues with a Dell and HP computer stuck at 640 x 480 and removing an reinserting the DisplayPort Cable. When I re-started the computer the resolution was back to the 1920 x 1080. Since I did not have a long enough cable to go to the monitor I plugged the DisplayPort cable back in. The video card has a DVI, DDMI and DisplayPort. I unplugged the DisplayPort Cable from the AMD Radeon HD 7700 to get a better look at the available connectors. This monitor has a DisplayPort, Mini Display Port and a DVI. Since the resolution was stuck at 640x480 I was unable to re-install the drivers.īased on a suggestion from one Windows TenForums I was going to attempt to use another connections on the Dell U2312M monitor. I did a complete uninstall of the latest AMD Windows 10 Drivers. I tried every solution that I could find on the Web and still could not resolve the issue. The AMD Radeon HD 7700 is connected via DisplayPort to a Dell U2312HM monitor. The upgrade went smooth but after a few days the system would only boot with a resolution of 640x480. I have a Dell 8500 that I recently upgraded from Microsoft Windows 8.1 Professional to Windows 10 Professional.
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