Sunday, October 4, 2015

windows 10 - laptop keyboard some keys don't work for a while but later on work

Very wierd issue.



Clean install of windows 10 home.
After leaving the computer for a while, sometimes some keys on the keyboard don't work. Some specific examples: 8, 9 right arrow, down arrow.



This typically happens after waking the machine from sleep.




What I found was if i open notepad and start mashing keys the nonfunctioning keys (i.e. not destructively hitting them, but quickly repeatedly pressing them) they will start working again, and won't fail till the computer goes back to sleep.



Nothing has ever been spilled on keyboard.
possible related issue, computer won't fall asleep by itself now. e.g in power management I've set the computer to sleep after 30 minutes when plugged in but it never does. It still auto sleeps if on battery, and i can command it to sleep from start menu or closing lid.



I've scoured the internet for what the root cause might be, but not much luck.
Things i've tried:




  • changed power management settings. don't even remember what
    specifically now because so many.


  • uninstalled all keyboard drivers and rebooted for them to be reinstalled.

  • run the powercfg command which resulted in changing a setting in power management to disable wake on network (or something like that))



Anyone know how to solve or how i can further troubleshoot?

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