Unplug everything that isn't needed to boot up. Leaving the Ram, Videocard, CPU and of course the power supply still connected to the mobo. See if it boots up then.
If not since you did mess with the ram try taking them out and placing only one stick at a time if you have more than 1 (can't see in the video). If it boots up after this try putting the other ram stick /'s back in.