Problem auto restart loop

[Euse161]

Hello, I have a Samsung galaxy grand 2 SM-G7105 and have entered automatic restart, that is, it shuts down and when it reaches the logo it restarts and so on all the time.
I tried to enter into the recovery mode but it also restarts and if I enter the download mode it also restarts.
I tried another battery just in case it was not enough current but with another battery also restarts.
I have no idea how to fix it, I hope your advice.

 

[balooney55]

try changing the power button or see if your speaker is loose. i had the same problem with my g7102 but it was gone after replacing the power button..

 

[timtiman]

same problem...but mine it doesnt auto restart when charging...pls help thanks