I have a MSI CX 72 6qd and the keyboards letter O, the number 1, the simbol =+ ( the one right beside the backspace) and number 1 from numpad intermittently, If i press the letter ''p'' along with the letter O it will work but if i press it alone it will might work or not work t same goes for the other letters anyone have an idea why this happens? should I replace keyboard? I already tried reinstalling drivers