I have a new kind of weird problem with my laptops keyboard.

To be precise with the shift key. Lately the both Shift-Keys doesn't just make the letters big, they also took role of the 2 and the 7 on the numpad.
So when i push the left shift key (with num lock) it also writes a 7. When I use the left shift key (without num lock), the cursor goes to the begin of the line.
When i push the right shift key (with num lock) it writes a 2. When I use the right shift key (without num lock), the cursor goes to the end of the line.

I really don't know what I changed on the computer... it's really weird and really annoying