@futzle I have a Thinkpad, just a couple of years old, and the zxcv on the keyboard has stopped working. I've cleaned, software updated etc, and only next step is replace, but I'[d have to replace the entire top plate and it's expensive. Going with a plug in keyboard for now. Repair centre guy says it's unusual, Thinkpads are usually more reliable, but I'm annoyed about the lack of repairability.