Lenovo Y530 ICH wakes up automatically when the screen turns off - why

To save energy, I set the screen off automatically (No screensaver!) for a specified time. The screen turns off after a certain time (Or I turn off it manually) but after a different time turns on automatically - Why?

- I tested the situation on battery and mains power supply
- Turning off the screen manually and waiting for only automatic
- On two different computers (Windows 10 - Lenovo Y530 ICH & Windows 7 - Lenovo Y550P)
- After complete cleaning / formatting of systems
- All system drivers and the system itself have been updated
- I tested after disconnection of all connected devices, i.e. mouse, external disk.
- Of course, changing all power settings, schedules etc. although I will gladly do it again after the eye of a specialist

Can You help me? Thank you!

If your computer wakes up seemingly randomly, then check to see if this checkbox is checked or not.... It is in:
Control Panel | Device Manager | Network Adapters ... When you left click on them, and go to Properties, one of your network adapters will have the "Power Management" tab.

There, make sure that the checkbox "Allow this device to wake the computer" is cleared.
In my HP Pavilion, it looks like this:

I did it - it doesnt works :/

When you say:

- All system drivers and the system itself have been updated

does that include the Bios'es?

- If not, then you may want to check to see if Lenovo updated it since you purchased the PC.

If you already did update the bios to the latest level... see if there is a setting in there - that would help.

..

- - - Updated - - -

This thread has some good ideas....
Weird problem, Lenovo laptop sleep mode | Pilots of America

Also... does this happen if you boot up in Safe Mode?

..

I checked once again - Lenovo has installed all up to date drivers (included BIOS) but maybe in BIOS settings I can change something?

No I know that without internet connection everything is fine, but I can not turn off internet everytime when I leave my computer... :/