Dead screen and flashing green light from BB Key2.

hi guys.
after a month of usage my bb key2 died on me after pluging it to charge last night.
only signs of life is a green notification light constantly working....
Can someone tell me what is going on?
Can I repair it by myself or should I just refound it to the shop? And heres my next question:
I got my key2 from a second hand shop but i belive it is still on blackberry warranty so how i can check it out? and if it is where i can give or send it back?
I'm from Poland (Europe :)).
thank U for every kind of help!
cheers!

Laws about warranties are different in different markets (generally they aren't transferable)... so it's best to just see what your local shop will do first and then try BBMo support.

Sorry don't know the meaning of the GREEN LED... could try reloading the OS.