So my friends laptop had a long crack on his screen from mid left of the screen, squiggle around to bottom left. Every time he boots to the login screen, he struggles to enter his password. Because the crack affected the laptop's touchscreen, it's not emitting a touch event at the bottom left of the screen every time. He did finally managed to get the password in afterwards, and struggled to get to device manager and disabled the touchscreen driver, then later uninstalled it.

TLDR; had a hard time using his laptop because it was touching itself.