Lenovo Thinkpad cannot sleep or hibernate correctly - hangs during shutdown

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This guide describes what I did when I made a clean install of Windows 10 after having used a good working Lenovo installed Windows 8.1

You must know how to find out what model of laptop you have and how to download and install drivers.

After your windows upgrade , open the Device Manager, navigate to "System devices" to find the running version of the Intel Management Engine on your machine.
Open the properties and read the version. See red circle.

Locate the version supported for BOTH Win 8.1 and Win 10, by the Vendor (At writing it is Lenovo) https://www.lenovo.com/us/en/faqs/intel/...
Locate the Intel Management Engine version. In my example the Danish page for S540. http://pcsupport.lenovo.com/dk/da/downlo...
Download the driver pack, and read the README page. Then install according to the README. It may tell you you are installing an earlier version - and that is what we want here.
Reboot the PC and see the driver version has changed to the one you downloaded.