After dropping my key, I went to my car its started up fine drove it about 5 mile and my stereo went off the abs light, battery light, power steering light (no power steering), air bag light came on also kept telling me the handbrake was on, i drove it steady to find somewhere to check the problem and as i pulled up all the light on dash went out i had nothing but engine was still running turned the car off and now it wont start not even wanting to turn over, the immobiliser light just flashes like made, but all the right dash lights come on as normal, i've checked fuses, put new battery on and there is nothing, could i have a faulty starter motor or could it be the ECU!!