Typing wrong letters

Hello,

I have an Medion Akoya Laptop.
I have an problem with Num lock, when i type u,i,o,p,j,k,l,m,.,-, and some of the numbers something diffrent happens. For an example: When i press 7 it just goes to the left of the word, instead of typing 7.
I have tryed to press: FN and Num Lock but it doesnt work, and i have taken the battery out, and restarted the computer and i have bin in the setting where u press windows button+r and then typed regedit, but nothing works please help me! >_<