I have lenovo tab a7 50 I did not use it for a few years more than 5 years and now when I want to turn it back on I tried to charge it and it shows the battery after plugging in the cable not the original cable and after that I tried to press power button it did not turn on but when it is charging it turns on and shows "LENOVO for those who do" and just stays there then I remove the charging cable and after some time it turns off when I try to turn it back on it shows nothing. I have my childhood memories in it so I dont want to take any risk.