Sleep Mode on Windows 10

[rgat]

I put my computer in Sleep Mode any time that I finished with it.   Last nite in the middle of the nite, I heard my computer power up on its own.  When I checked on it, the power lite was on "on" and it was running.  I turned on the monitor to see what it was running but only got a blank screen saying no computer was connected.  In less than a minute from when I heard it power up, it went back into sleep mode with the power lite flashing.   I know it was in power mode before I heard it power up because I came by the computer room a few hours earlier and the power lite was flashing in the dark room.

Is this normal when a computer is in sleep mode and what was it doing?

[PeaceLily · Accepted solution]

It is pretty normal and probably not hurting anything, but if you're concerned about it and want to find out what's waking your computer (and then potentially disable it if possible/if you want), you can use the steps in this Lifehacker article: https://lifehacker.com/how-find-out-what-woke-up-your-computer-last-1550549116