Re: Top Number Keys Wont Work... Except for 5 and 6
It could be caused by a windows update, go to device manager and uninstall the keyboard driver and then restart the computer. That may fix your issue.
If not a system restore might.
And finally try a different keyboard to determine if the keyboard is broken.
If my avatar piques your interest, go to google and search Dr.Tran video and have a look.