What to do if the computer turns on by itself?

Question

System administration

From a sleeping state it turns on within an hour. From off during the night. If you reconnect to the mains, it will not turn on by itself.
How to understand the reason for what is happening?

Answer 1

Yes, corny go to the magazines, but look what woke him up! You don't even need to configure anything, it records itself.

Answer 2

Disable or check peripherals.
For example, a mouse can wake up from hibernation. Lying on the table, from a slight vibration it shifts and wakes up the computer.

Answer 3

most likely a mechanical problem. I assume that closes the contact from the power button

Answer 4

Check the peripherals, check if wake on lan is connected, if there are any tasks in the scheduler.

Answer 5

when you exclude the twitching mouse, wake-up on a timer, from the keyboard, network and other bells and whistles in the BIOS, pay attention to the power supply and the motherboard itself. if there are norms on the mother, I would try to replace the PSU