Hi, If you have option then firstly try with a external keyboard. Means connect MAc book to External Keyboard. If facing same issue than you should replace.

Hi, You will be reboot your phone. Press your power button for a few second around 7 to 8 second. then phone reboot. After that, check your phone. I hope these solution resolve your issue.

Hi, Try this, Firstly Restart your PS4, and follow these steps. (1) Press and hold the power button on your PS4 for about 7 seconds (until you hear the second beep from the console). This will turn off your console completely. (2) Unplug the power cable from the console. (3) Wait for at least 30 seconds. (4) Plug the power cable back to the console. (5) Turn on your PS4 and see if the issue is fixed. *

Hello, Yes you can replace a battery. But review battery carefully after that replace it.