thanks for the replys everyone's replys help..

update so far is the company who was doing my car, they re-solderd the ECU cos they where SURE! it was that! but after they done that it still didnt work so Yes all along it is the chip thats faulty and it has been sent back and will get replaced. still yet to plug it in as it hasnt arrived but i just hope that fixes it

if it ever happens again i shall take the tips and try them out! but im pritty sure it wont...