Hi,
You have a few options to solve your problem:
#1 - Turn the PC completely OFF, not to Hibernate or Standby (may or may not work).
#2 - Disable the Keyboard/Mouse for turning on the PC in your motherboard BIOS:
- enter BIOS and look for an option related to starting with your Keyboard and disable that
#3 From within Windows:
Open the Device Manager, find the Keyboard and HID sections, then right-click all of them (multiple versions for some reason), then "properties"-> "power Management" and unclick the option that says:
"allow this device to wake the computer"
Should also apply to the MOUSE as well. I'm not sure how universally well this works but it did for me.