Windows 10 [SOLVED but ???] Lenovo 100S-11IBY screen doesn't wake up from sleep (Black/blank screen)

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SupplyRabbit402

See Updates added to the bottom of this post for the fix info. I have no idea why it is now working!


I had to wipe out the old Windows 10 Home version on this computer. After a Windows Update session almost a year ago, BitLocker decided to encrypt the primary drive of this computer.


I was never asked where to store the recovery key to save it so I could get in if ever locked out. The computer always booted to a BitLocker Recovery screen. I had no recovery key to enter to get back in. I never enabled BitLocker. I didn't even think BitLocker was possible with Windows 10 Home. It's listed as a feature of Windows 10 Pro.


The only solution I found was to reinstall Windows 10. It was a pain and lost of all the files stored on the computer.


I was able to create a bootable EFI USB key using the Windows 10 MediaCreationTool1903 on a different computer, boot it, start Windows 10 installation, delete the old primary boot partition and reinstall Windows 10 version 1903 (OS Build 18362.356) only to be presented with this new problem. I have no idea what version the original Windows 10 Home was but it did not have this problem. But all that has nothing to do with my current situation.


First Sleep Mode Problem


Once the computer goes to sleep, the power profile is set to shut off the screen after 4 minutes and to sleep after 5 minutes when running on battery power, waking the machine is problematic.


After 4 minutes the screen turns off, if I press a key or touch pad the screen will come back on; however, after 5 minutes when the computer goes to sleep - power light goes off indicating the computer has went to sleep, it will not. The power light on the laptop lights up as if it has awakened; however, the screen remains blank/black.


If I press the power button a proper amount of time (yet to be determined sometimes just a short press and release the screen will wake up but it takes a few seconds, other times I hold the button a couple of seconds and the screen awakes only to shut off again). Reading another post, the answer posted mentioned closing the lid and opening it again. This method to awaken the screen works! The screen wakes up every time. But, I should not have to shut the lid and open it. A keyboard or touch pad press should make it come back on.


Second Sleep Mode Problem (See update below maybe not a problem after all - just took some time to go to sleep)


If I use the Start menu -> Power icon -> Sleep option, the power light does not go off but the screen does go blank. Press a key or move the mouse before the 5 minutes of the power profile actually puts the computer to sleep the screen lights up to display the main screen that is shown where one would be asked to press Ctrl-Alt-Del to login. Currently using a local account without a password for testing so never actually have to login. Move the mouse, press a key on the keyboard and that screen pans up to reveal my open applications.


Using this method to put the computer to sleep does not work properly! But, I can get back in, the screen lights up, until after 5 minutes of inactivity and the power profile actually puts the laptop to sleep - power LED goes off. Strange!


Please, help.


Update on Sleep Mode Problem 2 - Looks like the laptop does actually go to sleep. The power light finally did go off after about 2 minutes and pressing a button on the touch pad awakened the laptop and the screen too. I'll have to try after a longer period of time has passed to see if the computer wakes up as well as the screen.


Update on Sleep Mode Problem 1 - I don't know what happened but the last 3 or 4 times I've used the keyboard or touch pad button or external USB mouse movement to wake the laptop; it has WORKED as expected. I have no idea what I did other than using the close and open the lid solution suggested in the other thread, linked above, a few times to awaken the computer.


Happy that it's now working but I have no idea why it was broken before and now fixed.

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