Infinite Activation loop in NFS hot pursuit and shift 2 unleashed

Cannot pass activation at game launch.Its a common problem,it seems to be a problem of origin unable to work with solid shield. I have got win7 x64,GTX 570,Intel core i7 2600k.The graphic drivers are fully updated.Reinstalling doesn't solve the problem.Renaming solves it,but I am unable to play the game through the client ,so its not the right fix.Kindly help.