Try removing the cmos battery and then shorting the cmos flash pins, I had a similar issue with this board. If that doesn't work use flashback to load a new bios I had an issue where the bios got corrupted and wouldn't remain powered up for longer th...
Disconnect from power and remove the cmos battery and reinstall after 20 seconds, had the exact same issue and that solved it Sent from my iPhone using Tapatalk