Eos 1300d won't start/ work

I have a canon eos 1300d and I think I forgot to turn it off 2 months ago. Now today when i tried it, it gave no response. I've tried 2 diffrent batteries, tried flicking that little switch that closes the battery and sd card holder, tried changing the lens and tried having the settings on P and holding down the button.

Please if anybody knows something tell me…