vauxhall corsia r reg?

Car worked fine yesterday, got in it today wont start, all the lights come on, turn the key and nothing. dropped key this morning opened up central locking now not working has this got anything to do with why car wont start. petrol ok, battery ok, oil ok, no problems in driving yesterday to work, then mums then home no problems, but now she just wont kick in, orange light flashing never seen this before HELP|.