Odd one – 36 is the water leak error – machine has had to top up the water level four times. Usual cause is syphoning – drain hose pushed too far down the drain pipe.
However, you say it doesn’t start, so ignore the code and do the basics first. Check lid switch and out of balance switch for function, corrosion and dodgy wiring. You’ll need to remove the top deck for access – two screws at the back will release it.