New problem out of nowhere.

Several hours into a flight I suddenly get a C HYD Failure and thus lose my Right yaw Dampener and my RAT deploys.

Everything was set up properly prior to this, and I dont have any programed failures, so what happened?

Secondly, how do i fix it mid flight?  All my HYD buttons are set up properly, but Im still getting PRESS warnings.


Any ideas?