I had a lenovo A680 suddenly stopped from functioning. I tried to turn in back on and it stays on its logo and does not continue. I've waited already for an hour and nothing happens. I tried formatting it using the recovery and also I tried wiping out the cache and still it does not continue. Maybe is there any solutions for this problem? By the way the power and volume button is damaged so it is kinda difficult to turn it on using only the power button. And lastly it is not rooted