thanks for the suggestions I tried what you said , but still no luck. I bought universal battery charger, charged the battery and seems like it is charged, when I first inserted it in the device it turned on and showed 76%, but just after 5 min of using the device ( just managing and editing some contacts ) it went down to 45 and then the device turned off. I redid the same for the battery, and inserted it again after about an hour, but the device didn't turn on.
so is this a battery problem, rom problem or maybe my device died