Curve 9300 red blinking

Actually i have a blackberry curve 9300 i did not found any solution maybe you tell me how to fix that i hope so the problem is went i put the battery only the red led turns on 4 times the first one blink red led is more longer than the others 3 red blink led is more faster what i can do if any of you tell me how to fix that please.

PD: i have great skills in hardware and software you can tell me thank you!…:)