This is what everyone is upset about. It looks like (unless i can't read) that you plugged in the mobo, without a CPU and then inserted the CPU while the mobo was still plugged in and running? Which made the mobo shut off?
This is "hot swapping" and you
NEVER do that with a CPU!!
To use this CPU in another mobo is OK and a preferred method of troubleshooting. Just dont do it while its running!!!