Enable the keyboard in Device Manager ... people do this for laptop keyboards, and you'll probably remember if you did that, but it doesn't hurt to check. Update your drivers.

Put the keyboard back together, plug it back into your computer ... suggest removing the keyboard driver reinstall and test the keys again. Launch the Device Manager by right-clicking on the ...

Many people and most power users tend to use keyboard shortcuts to carry out operations on a computer ... to rollback the driver. If you did not, then maybe updating this device driver to its ...