I installed a new monitor, which worked fine until I tried to adjust the display settings to improve the fonts. Then I got a black screen and a message that said I have the wrong frequency. Now I can’t see anything to reset the default display. I know the monitor works because I can see the computer name and Windows logo at boot up. How do I get to settings again?
You’ll need to start the computer in Safe Mode. Once in Safe Mode, Click Start, Control Panel and choose Display.
In the Display properties, click on the Settings tab and move the slider under the heading Screen Resolution to the left.
When you reboot the computer, the display will be back at 16 colors. You can then move it back to the proper resolution.
If this happens in future, don’t panic. If you wait ten seconds WITHOUT touching the mouse or keyboard the screen will go back to the previous setting.