My right arrow key types 4113 and opens calculator, my left arrow key types 0 (then goes down a line) qe, my delete key types /7, opens help and turns on caps lock, my page down key goes back to home, my end key types 52zc, my page up key types 6+`5, my insert key types *8g and opens display settings. Miraculously, my uparrow, enter and backspace keys are still functional. Is there a way to troubleshoot this in terms of software?