PC won't wake from soft off state

Hi all I'm having a bit of a game getting my PC to wake up from "soft" off state to perform an automatic backup. Everything seems to be set up properly but when the time arrives my PC stays turned off. The app I'm using is called SyncBack. The windows task manager is set up correctly as is sync back. I seem to remember reading somewhere there is an issue with my mobo or bios that prevents windows from waking the PC, and there was a fix. Unfortunately I didn't sort it at the time and now can't find it. Has anyone else come across this issue? My specs are in my signature.

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