Have plugged in two different usb keyboards and the same buttons don't work. Delete, return, num3, num6, num9 backspace. don't work. I have run virus scanner, and malwarebytes antispyware, reinstalled drivers
and reinstalled keyboard software. Both brands of keyboards are different and find that both have same issues means its windows. The two keyboards i have I have tried in different usb ports and the brands are Logitech G11 gamming keyboard and some no name gel rollup keyboard.