Windows Lumia 535. Phone not switching on. how can i fix the problem?

[1worried]

Windows lumia 535. Phone not switching on. how can i fix the problem?

The battery was completely drained out when i put it on charging. But even after 2 hours the screen is still blank/black. no sign whatsoever. I pressed the power button volume down button but still no vibration . please help

 

[Tumultus]

Re: Windows lumia 535. Phone not switching on. how can i fix the problem?

Just make sure it is properly plugged in and keep it on the charger over night. If you drain the battery too much, it takes a long time to charge.