I cannot start my iPod and it can't detect in ituens?

I have 4t gen, ipod touch.One day i was charging my ipod with my laptop and sync some books.and after some time i want to start my ipod but it didn't show anything on the screen and then i disconnected with laptop and then re-connect it but ituens can't detect it..then i tried to get out from DFU mode but it also didn't work..I tried everything but nothig help me..so plzz gyuss give some tips ..what to do now??and what's the problem with my ipod touch 4th..32gb..and it's only 1 year 3 months old..