What can I do if my Xiaomi Gaming Monitor G27i fails to power on?

If Xiaomi Gaming Monitor G27i can't boot up, you can check it by the following methods.
Remove the monitor cable directly, keep the monitor power, if the monitor boot logo appears, it proves that the monitor is functioning normally, poor video cable contact troubleshooting cableport, cable and signal source.
2. Replace other HDMI port test.
3. Replace the DP port to test.
4. Replace the cable test.
5. Replace the signal source to test.
6. If using an adapter, remove it and try.