I have had this problem with my desktop machine for over 24 months and the only reason I put up with it is because I thought it was the motherboard being crappish. That PC was running Windows 7 and then Windows 10.
- To prove 100% it was not LAN magic packets I unplugged the Network
- I also unplugged Keyboard and Mouse to prevent wake on USB
- I turned of all BIOS related setting for wake up I could find
- Turned of all allow on wake from on Network devices in Windows
Nothing sorted the problem. Everything but power was unplugged it kept comming out of sleep. Sometimes even 5 seconds after it went to sleep. The only solution was for me to pull the power cable out every night...
Now I got rid of that machine and got a Dell Latitude and the flippen things turns on at night on its own again??!?!? Not only that but my wife's Acer started doing the same thing.
I seriously do not know why this started happening. For years I have used sleep mode and it worked fine now all of a sudden the machines are arising .. ehm . waking on their own the whole bloody time.
Anybody know what this is?? Maleware in my BIOS? Printer sending out magic packets? Really annoying me now ...