Yep.. it eventually came back up, and I flashed the 3.10A BIOS to my DUAL-VSTA775.
S3 sleep works now, but when my computer wakes up, my Logitech MX 3200 mouse/keyboard only work about 1/3 of the time. Not sure if I should blame Logitech or ASRock...
Oh well. I guess I'll just...