Short story - ASRock H67M-ITX motherboard, Windows 7... etc.
I got rid of an old 2.5" laptop drive that was dying and was making the UI very laggy. Installed an SSD I had around. I rebuilt the box from scratch while I was at it, just seemed like the thing to do.
System worked perfectly with the platter drive. Now that SSD is in there, when I hit the power button on my Harmony, it goes to sleep then wakes back up (Windows is set for power button to go to S3 Sleep)
I cannot figure out why it sleeps then wakes back up.
Took case back apart, checked BIOS for latest version, checked all power settings in BIOS, even messed around with them to try to get it working right. Removed all apps from Windows 7. Unplugged all USB devices. Still no luck.
Guess that's what I get for saying I never have any power on/off issues. Damnit.