Ever since I upgraded to 8.1, I am facing a very weird and annoying issue. The shift button automatically gets pressed, the key is not physically pressed its just whatever I type gets capitalised randomly and I have to knock the shift button couple of times to get things back to normal. Even when I restart the laptop the "filter key" is automatically switched on at login and have to manually turn off at login screen each time.
I have an Alienware m14x R2 and there nothing wrong with the keyboard.