Help me to fix my tab 3

Hello, I have a Samsung Tab3. Once I saw "Software Update Available". Then I agreed to download. After download [~55MB] I clicked "Install". Then it wants to reboot. Then I pressed "Okay". It was turned off and when it turned on, then a text appeared with a black screen. It was in red font [mv] CableType=0. I was watching movie on laptop. Then I connected my tab with my laptop through USB Data cable. Then its changed "0" to "1". Then I used to hold the power button until it turned off and nothing else. Then I did it again to turn on. But there was nothing else without a glowing black screen. No logo, no sound, no text or else. I tried to did reset for go to recovery mode by holding power and volume buttons. But the result was same as previous.
I wrote my problem as detailed as possible. Please help me out to fix this problem.
Thank you