Keyboard keys on laptop on not working

[Ritesh_4]

Hello
I am currently facing an issue with an HP laptop running Windows 10, whereby the following keys are not responding at all when typing: R, T, F, G, V, B.
Sticky keys and other similar features have been turned off.

Any fix for this issue?

[rproffitt]

The next test I try is to see if the issue follows with some USB PC Keyboard.

However the keys are in what looks like a few scan lines of the common matrix decoding so it looks like a hardware issue from here. What about the number keys? 4 and 5 here may fail too.

[Reverend Jim]

I have repeated problems with Dell Hardware Support in trying to convince them that a problem is hardware (warranty) rather than software (not covered). I have found that the easies way is to boot into Linux and demonstrate that the problem still exists. Download a Linux (I find kubuntu the friendliest) LiveCD and burn a DVD. Bott into the DVD (select try instead of install) and see if you have the same problem. If you do then you know the problem is with the keyboard.

[rproffitt]

To Reverend Jim. On Dells we have Dell Diags (varies with model) so try this. Boot the Dell and hold down the D key. See if there's a keyboard test.

[Reverend Jim]

Most Dells these days do come with a diagnostic partition that yu can select if you tap-a-tap-a on the F12 key while powering up. I think POWER+D just boots into a special (undocumented) video diagnostic. Can't say if HP has something similar.

[Ritesh_4]

@Reverend Jim - Tried booting with a linux live cd, still got the same issue with the same keys. Number key 5 however is giving something bizarre on Windows however when typing on notepad, it starts a loop with the full date and time and stops only when I press the "Enter" key.
Will try to test with a usb keyboard and revert back asap.

[Ritesh_4]

USB keyboard working well. So indeed it's a problem with the matrix itself it seems, and thus a change required...