Need radio coad for standard renault clio radio , i replaced the battary and now it flashes 0000, and i cant find the coad in the books

First make sure that the code has not been noted somewhere within the car (underneath the ash tray, glove box , rear of sun visor etc)
 
 
To see if your code is available here  for free then the radio will have to be removed from the dashboard (and if you are lucky, someone may have written the code on the casing ) .
 
If not then POST A BRAND  NEW  QUESTION
 
quoting the radio MAKE+MODEL plus ALL the LETTERS+NUMBERS on ANY LABELS ,BARCODES or STAMPED IN THE METAL CASING