I can't even click or type in my password to unlock my computer.
If I plug in a wireless mouse, then the mouse works, but a wireless keyboard does nothing. I can't type any keys.
In this case you are going to need a USB lead connected keyboard. Has the laptop been dismantled to replace the keyboard? If so it's likely that you have failed to reseat the keyboard and mousepad connector properly.
In this case you are going to need a USB lead connected keyboard. Has the laptop been dismantled to replace the keyboard? If so it's likely that you have failed to reseat the keyboard and mousepad connector properly.