Some numeric button are not working on my laptop

[William213]

There is no recent change on the laptop , some numerical buttons stopped working, like 1,2,3,4 and 9 .

I have tried the uninstall steps through device manager. I have restarted several times but still not working. I have ran a diagnostic component tests but still no luck. Pls how do I get those number buttons to work on my laptop ,?

note : most buttons are working except some numerical buttons . 

[Adones]

The problem may be mechanical.Sometime when dust and dirt got under the buttons stops working.I try to clean with a toothbrush (do not use water on the keyboard) this may work