I suggest that you borrow a USB keyboard and attach it to your machine while the machine is turned off. Boot. If the USB keyboard works fine, your keyboard or cabling is at fault and you need to take it in to the shop.
I suggest that you borrow a USB keyboard and attach it to your machine while the machine is turned off. Boot. If the USB keyboard works fine, your keyboard or cabling is at fault and you need to take it in to the shop.