Power button stopped working

[conquerall]

Hello! Im having problem with power button in my Galaxy S3 Mini. I wanted to take a screenshot and suddenly power button stopped working. I thought it was some software bug so I decide to restart phone by removing battery, but now I can't turn on my phone because power button still not working I wanted to enter to download mode to reboot phone, but download mode is not working too. I have tried to turn on phone without using power button (some battery/charger tricks) but its not working. I have no idea what else can I do? When I plug in USB cabel I can see battery level, but thats all. Any ideas? Please help, I need to turn on this phone till tommorow

 

[B. Diddy]

Welcome to Android Central! Does the button feel stuck? Could there be some kind of residue that's making the button stick?