HELP! Won't start and alarm going off!

Had new clio a week.

Just back from walking dog noticed the sidelights flickering light mad.on closer inspection I can hear something electrically ticking for about 3 seconds then 1 second stop.if I go inside the car the alarm goes off and I can't lock it. Inside the car it doesn't start or even bring up the start up electrics?

Any ideas?
 
I had that, but I cannot think for the life of me what I had to do. Some kind of reset...grrrr, sorry, I will shut up now, no use :worried: