From stories I hve heard MyTravel had a couple of instances of losing ALL 6 screens when they brought the new LCD aircraft into service. From what I understand there was no reset and the aircraft were recovered by SBY instruments.
In the AAIB report for the BA incident the pilots managed to recover the systems by following QRH procedures while in the hold so the system worked. Still must have been an interesting atmosphere for the first few seconds in that flight deck. Well done for staying calm.