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My computer recently (today) started to do this behaviour. I experienced it twice within the previous 3 hours. The symptoms are the following:

  1. normally using the computer
  2. keyboard all of a sudden stops functioning (the backlight, num lock, caps lock state states are still as they were, switching them is impossible)
  3. Windows with mouse control still functioning properly
  4. after 3-4 minutes blue screen of death occurs, it restarts the computer
  5. BIOS-like dialog shows up to choose from: Normal startup, BIOS setup, Boot menu, System Recovery. Up and down arrows and everything else still not functioning (!).
  6. I have to turn off the computer by long pressing the power button.

My configuration:

  • Lenovo Y700
  • Intel Core i7-6700HQ CPU
  • 16 GB Ram
  • Windows 10 Pro
  • Current Windows installation is approximately 3-4 years old, but otherwise functioning properly

How can I diagnose what causes the problem? Please help me, this is so frustrating.

(note: I don't have any restore points, I've just checked)

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  • You will find in the folder C:\Windows\Minidump one or more .dmp files. Please zip these files one-by-one (using 7Zip gives better compression) and post somewhere we can download (OneDrive, dropbox etc) to analyze the crashes.
    – harrymc
    Nov 7, 2020 at 14:29
  • If you haven't already, take a look at Event Viewer (eventvwr.msc). In there, look in the Windows > Application and Windows System logs. Also, sometimes the BSOD page can have some helpful messages. A picture of what it shows might be helpful.
    – Meow_ly
    Nov 7, 2020 at 14:35
  • @harrymc thank you in advance, here they are: filebin.net/7tb5fbarfkfv72z5 Nov 7, 2020 at 14:39
  • @Meow_ly I found nothing useful in the EventLog. I'm on reproducing the BSOD, if I did I'll post the picture, but as far as I remember there was nothing useful there either only an error code I think DRIVER_POWER_STATE_FAILURE. Nov 7, 2020 at 16:22
  • This is a very general error code. It occurs in the kernel and no driver is clearly indicated. Check your drivers and BIOS at Lenovo. For hardware, the power supply is more likely. But these are only guesses.
    – harrymc
    Nov 7, 2020 at 16:46

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