My Windows 10 laptop is shutting down when it should be sleeping. I put it to sleep for the night, but when I check in the morning it is shut down.
This started when I started using it as a desktop PC tower. I am using a VGA monitor, a USB mouse and an old Microsoft keyboard connected via PS/2 -USB converter. The laptop remains folded and standing upright (long axis on contact with the desk).
Overheating is not a problem. I used CoreTemp and the temperatures are nominal. Also, the shut-down happens while the laptop is sleeping, not during operation. I also checked the Windows power settings. No setting is set to "shut down". Closed lid setting is set to "do nothing", and everything else to "sleep".
My guess is that the PS/2-USB converter and/or the MS keyboard is messing with the Windows registry. I cleaned my registry using CCleaner, but to no effect.
What can I do to solve this issue?