My lenovo p70 keep buzzing and cannot open

Solution
You can try the pulling the battery for about 5 minutes and then putting it back in. Then hold down the power button and see if it resolves the problem.

However if it does not, and the phone is under warranty, then I would contact either your carrier/service provider or the manufacturer as it may be the power button that is the problem.

You can try the pulling the battery for about 5 minutes and then putting it back in. Then hold down the power button and see if it resolves the problem.

However if it does not, and the phone is under warranty, then I would contact either your carrier/service provider or the manufacturer as it may be the power button that is the problem.

 
Solution