With the keyboard, my shift key clicks when being pressed. The screen will go black for a second or two once every few times when I awake my laptop from sleep.
with my bios/boot up, every time now when I boot up, it asks for a password before even going to the secure boot up screen. Also, I normally have gibberish appear on the screen when I boot up as well. The gibberish will last about 1 to 2 seconds and then go to the log in screen for the home screen.