Problem with HP 11.6 Chromebook G7 EE 6ZH15PA

[mzee]

My Grandson has an HP 11.6 Chromebook G7 EE 6ZH15PA which is out of warrantee.
Most of the time it is fine, but occasionally the keyboard prints nonsense, making log-in impossible. If you slap it on the base it comes right.
I checked the keyboard cable, and cleaned the socket, no change.
If I use an external keyboard (bluetooth or USB) it works fine.
Because it recovers after a thump I feel that it is a physical issue.
Someone suggested placing a plastic shim in the keyboard socket to tighten it.

Any suggestions?

[1101]

Someone suggested placing a plastic shim in the keyboard socket to tighten it.

Any suggestions?

I wouldnt , you'll see why not when you see how small & fragile the 'socket' is
Try re-seating the cable
otherwise , a new keyboard and hope that fixes the issue .

[piroska]

My Grandson has an HP 11.6 Chromebook G7 EE 6ZH15PA which is out of warrantee.

By how long? It may still be covered under the CGA.

[rumpty]

Maybe it is just a key sticking down?