Verlauf von "Copy paste functions do not working" bearbeiten

Recently i got a problem with my laptop because it does not shut down. So i reset the PC and the problem was fixed. Now i discover that copy pate functions do not work. I tried the shortcut keys also. It does not working. Why is this happening?  Can anyone tell me how to fix this?

Gerät:

acer e 15 laptop

Status:

open