Small update.

I bought a spare battery, plugged it in and the phone booted up fine.
Both the USB cable and the wall charger are not detected when the phone is running and it doesn't charge.

When the phone is turned off and i plug the charger or the cable in, the led blinks orange couple of times, phone does a short vibration as when turning on, nokia logo shows up, then the dots.

After this it shuts down and starts doing the things i described before in a loop. I noticed that the battery is actually drained and not charged during this loop.

Thanks in advance, any ideas are welcome