Are you sure the disc you are using is good? Probably that particular media is not compatible with your optical drive. Try with a different disc.
OT: Wait a second, Tapatalk signature is not working on forum for anyone including me , how come your are getting a Tapatalk signature(if that post is from Tapatalk) unless you are typing it manually
i installed wondows again...i dnt know the culprit but it is working fine now....fyi ...its my signature only.....and i lost all my data on my 500gb hard disk in this process...i dnt know how....