Hi guys ive got a phat running 5.50 gen d3. i havent used it for a while so the battery was totally flat, i charged it fully and now when i turn it on all i get is a blank screen. i took the mem card and the batt out but when i put the batt back in, the green on light comes on by itself . when i hold the power switch to turn it off, it goes off ok but when i try to turn it back on all i get is a blank screen . can anyone please help, thanks in advance

Scottish Noob