I dug my t3i out to start me with youtube. It's been in a closet for YEARS. I bought a brand new battery ( name brand canon) and a brand new charger ( off brand). I let the battery sit on charge 4 hours at first. My camera would come on but showed on...
The battery charger itself got seperated in a move. I had moved 4 times since I bought it. Additional other life stuff I'd rather not talk about stuff too.If I can't get a solution I'll take it to a shop after the snow and ice.