There is usually a 1 year manufacturer's warranty. A lot of times this will cover issues like yours if there's no sign of water damage/physical damage.
As NJ stated, you need to contact who you got the device from.
The difference between stupidity and genius is that genius has its limits.
When you take things for granted, the things you are granted, get taken.
Even a mosquito doesn't get a pat on the back until it starts to work.
Too many people miss the silver lining because they're expecting gold.
[BES 5.0.3 / GroupWise 2012 HP2]