Keyboard broken on laptop how do i bypass login screen windows 7

[smurf60]

Hello,
I spilt water on my laptop keyboard and now non of the keys work, i bought a wireless keyboard, but cant install it because i cant get past the logon screen. Can you help

 

[geekapproved]

Why not use a usb keyboard?

I don't understand the point of a wireless keyboard with a laptop. You have to be right in front of the laptop to see the screen, so why a wireless keyboard??