Guys, I need your help. I have an issue with Lenovo T490s laptops – several dozen units in different configurations, and in about half of them, the same problem appeared over time. Specifically, the Enter and Backspace keys don't work unless they are held down for a few seconds or pressed slightly harder than usual. Once they start working, they continue to function until the next reset. However, this is not just a Windows issue – it occurs under other operating systems, in BIOS, and during POST as well.
While searching for information, I found many threads describing the same...