- Press the Option key (could be a windows logo, or Alt key depending on keyboard). This should bring up a menu in the upper left of the screen.
- Use the arrow keys to go down to "Accessories", then arrow right, and down to "Terminal" and press the Enter key. This should bring up a black terminal window.
- Enter the following command: sudo nano /boot/config.txt then press enter. This will open up a file.
- Use your keyboard arrows to go down to the bottom of the file, and on a new line, add the following lines:
- Then press ctrl o then enter and then ctrl x then enter (this will save and quit out of the file)
- Lastly, type sudo reboot, and press enter. This will restart the display.
When it comes back up the resolution should be back to normal.