Hello, since changing my laptop's AC adapter the keyboard stopped working properly. For example when i press single time a key like "a" it shows "aaa" it's not a messed up windows settings btw cuz i've formatted my laptop and the problem still exist
You can try updating the keyboard driver. To do so, open the device manager in your laptop's windows. Search for the Keyboards option. Then extend the list. After that right-click on the Standard PS/2 keyboard. Then click on the Update driver. When the update finishes. Please check if your keyboard working.