I had my tablet since about 1 year and 2 months. My tablet was having charging issues with the original charger so i ordered a new one. These problems kept occurring so i ordered about 4 chargers overall. Yesterday i ordered two chargers and when i charged the tablet the percentage was going down for one of the chargers then suddenly went to 100%. While i was playing with it it suddenly cut off at 78%. I tried charging it but the battery charging symbol didn't cut for either chargers, and my tablet wont cut on or show a charge symbol at all. What should i do?