Toshiba laptop typing itself "6"

Welcome to the forum!

Repeated number 6. mmm...

Some demon possess it or you have a stuck keyboard. :lol:

Go to device manager to disable your laptop keyboard and plug in a USB keyboard and see it this persist.

A stuck keyboard can be fixed by replacing it but if it is possessed by the demon, bring it to your local church or religious gathering place to get an exorcise :lol:
 

Easy way to rule out a problem or a demon : ) ^^^ +1
 

Or it has a short from a coffee spillage : )

Coffee-Spill-Thumb.jpg