system boots unexpected

Question

Every evening at 22:00 a backup is made, after the backup the following command is issued : "shutdown /f /s". So the system is down.
In one night every 2 weeks at 3:00 the system is booted. Unattended
What could be the reason of the boot?

Answer 1

@Hans van der Aa

Blockquote

De geplande taak NT TASK\2BrightSparks\SyncBackProx64\AAWRK01-Hans\SyncBackPro PLEX_DATA wordt uitgevoerd, waarmee het inschakelen van de computer wordt aangevraagd.

Blockquote

We have the culprit here

Check with SyncBackPro options and remove the task.
This one should be found also on Scheduled Tasks.

Answer 2

Hi @Hans van der Aa

I suppose there's a scheduled task which starts every two weeks and which can boot the system.
Check Event Viewer in this timeframe to find out which one.

Answer 3

@Spigolo There is no scheduled task which starts every two weeks at 3:00, the system is down. There is nothing registered in the Event Viewer.

Answer 4

@Hans van der Aa

I surely believe you but something is awaking the system.
Maybe a network Magic Packet. Disable Wake on Lan from BIOS just in case.

Answer 5

I will disable wake on lan and wait two weeks for the results