This is a common issue many Windows users report – ‘Every time I start up or log out of my Windows computer, it automatically switches the screen resolution to a different from the default one’. The problem may occur if you have enabled Advanced Performance in the Device Manager, and now even after disabling it, the problem may persist. If this problem is by any installed software, the software should be removed to see if it helps resolve the issue.
In Windows 10/8, you typically set the screen resolution via the Control Panel, as shown below in this image.
Screen Resolution changes on its own automatically
In Windows 7, you were forced to reboot to apply all the changes to the display screen resolution. In Windows 10/8.1/8, you are not forced to reboot your Windows PC. But if you don’t, the display changes may not be applied to all items on the screen, like for instance the Start Screen. So if you are facing issues after changing the screen resolution, reboot your Windows computer and see if it makes the problem go away.
If you find that your screen resolution keeps changing automatically on its own, after sleep or after reboot, here are a few suggestions you can try:
1] Ensure that your Drivers are up-to-date. Specifically, update your Graphics Card drivers. If need be, uninstall them and fresh-install their latest downloaded version. Just because you’ve upgraded your operating system to Windows 10/8/7 doesn’t necessarily mean that you have the most up-to-date drivers on your computer. To ensure you have the most up-to-date driver, check the driver version number and compare that with information on the developer’s Web site.
2] Disable the screen saver and see if it helps.
3] Run msconfig. Then, on the Boot Tab, ensure that the BaseVideo option is un-checked. Restart.
4] Try changing the Power Settings, to allow for Sleep Mode, when sharing media. Then from an administrative command prompt, execute the following command:
powercfg -h on
5] Try the Windows Display Quality Troubleshooter.
Hope something helps.
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