On my vacation to beautiful Manila in the Philippines, when I connected my laptop to the power outlet through the battery charger cable, its screen started to blink sporadically. At first I thought that the screen has become damaged or something else is broken during the flight. But the screen worked fine without the power cable plugged-in. In a few minutes I realized that the electric voltage from the wall outlet was fluctuating and that’s why the screen was going back and forth on battery and AC power – making it blink.
If this is happening in your home or office, then the best way to handle this is call an electrician and have the wiring of your place checked to see why the voltage is fluctuating. But inside a hotel room, you don’t have that option – all you can do is complain to the manager or change the hotel. Here is an easy fix to stop the blinking that is happening due to fluctuations in the voltage:
- Press Win+R, type powercfg.cpl and press Enter.
- In the Power options window, click on the Change plan settings against the power plan that is currently active.
- On the next screen, you will see different options for battery and plugged-on states. You have to click on Change advanced power settings.
- In the new window that opens, select Display then Display Brightness and then choose same percentage for both On battery and Plugged in. For example, 50% brightness for both or 100% brightness for both.
- Click on Save button and you are done.
Now when you will be using your Windows notebook computer with battery charger cable plugged in, you won’t notice any blinking or flickering of the screen due to fluctuations in AC voltage of your place. Obviously this is a short term solution and should not be used for long duration.