Random key popup i`n ins`p`i`ron` w`i``n`do`w`s 10 precision laptop

Hi all,

As you can see` from the ``tittle this weird key is popping up while I type . I dont understand how to solve this problem . Also during starting up the mouse cursor behaves weird and it used do jumping and opening random programs. Now I have changed the power settings and I have gained somewhat controlability. But this weird key keeps coming up and sometimes the tilde sign pops up randomly so I can not type anything. Please help