Security light flashing really fast now car wont start...

So on top of the power steering being a piece of sh** now I have somehow managed to mess the security up as well.. I can't remember exactly what I did but I doubt it really matters at this point, the issue is the gauge cluster has the little red car with the key inside flashing very fast (the security light) the alarm isn't sounding or anything and I am using the same key the Only key I got with the car that has started it since day one now is not working.. but it keeps flashing very fast and the car won't start.. I am not sure what to do? I have tried taking battery cable off, still wouldn't reset and work... any ideas on maybe reprogramming it to work? Thanks (smash)

might have to get a dealer to reprogram them for you?