samsung galaxy tab 10.1 will not power on please heeelllppp!!!! ;(

Hey guys my tab has been working great for weeks iv never dropped it or anything it charges brilliantly, its not rooted and it does not have a custom rom on it as i only use it for work today out of the blue it turned off and will not power on i connected it to the charger and nothing happens iv changed the charger and still nothing happens iv held the power button for 15 seconds plus and that didnt work and finally iv held the power button and touched the screen, still nothing worked

Thanks for the help guys
Oh als
What can i do is their anything i can buy to fix this e.g download jig