HP Laptop keyboard : Backslash Key is mapped to "Ctrl"

[Steven-C-Clark]

Hi.
I have a HP Pavilion (G5?). And when the backslash key is pressed, nothing seems to happen. I have found out (see below) that the key seems to be mapped to the Ctrl keystroke at the BIOS level.

The keyboard was purchased in 2020, and working fine as far as I can recall up to about a year ago.  I got a new laptop, so stopped using the older one.

I booted up the older machine, and I find that the backslash key produces no visble output.

I have booted into the BIOS hardware checks, and on the keyboard map, when I press the "\" key, it flashes up that "Ctrl" has been pressed.
The test offers 2 different keyboard layouts to test - and I have tested both layouts - they behave the same way.  I cannot find a way to change the key mapping back to what it should be.

Has anyone experienced this, and is there any way to fix it.

Please note that I'm aware of strategies to handle key remapping in Windows, but as this is happening prior to Windows loading, I think it needs to be done at a firmware/BIOS level.

All suggestions gratefully received.

Thanks

Steven

[erico]

Which keyboard version do you have?

Check to see which display language is selected. In settings, go to the Time and Language>Language & Region section to see what is the current default selection. The language you have selected will determine which character is displayed when you tap a key in a document or a dialogue window onscreen.

https://support.microsoft.com/en-us/windows/change-your-keyboard-layout-245c49b8-f856-7fd7-2cf5-41e5...