[General] Unrooting Note2 that only comes to CWM- based recovery

I have to get it repaired because I can't charge it anymore, it stopped detecting the cable or charging yesterday. But if I plug it in I can still come to recovery (0% battery ). I am scared of voiding my warranty because it is rooted. Can I connect it to my computer somehow? If I try to boot it up completely it shuts down because of not enough power.

.

forum.xda-developers.com