Hook up a USB keyboard to it and see if you can type on it. If it works then check to see if there is a software or feature that has disabled the keyboard. Some touchpad can be disabled by tapping the touchpad on top left one time If that doesn't work, go to manage and on device manager, find the keyboard in the tree. Expand it and do a right click and select properties. Then find the rollback driver button so it will kick back to the previous keyboard driver after computer reboots