No ignition car will not start?

Drove the car to work about 7:00am drove home again about 1:00pm went to the shop about 2:00pm everything fine no issues come out of the shop put key fob into the key reader nothing happens, only thing on dash is symbol saying press clutch +start but nothing happens. I can lock and unlock the car hazard lights work and interior light but nothing else works. I've been told to change crankshaft sensor and starter which I did do but on removing the starter I noticed a bolt from the starter had come completely loose and arc mark on the bolt lines up with the starter. I've checked battery it is showing 11.6v iv also had jump lead and even tried a booster pack and still nothing. Any help would be much appreciated.