Kindle stuck on a book page

Hello everyone !

I recently bought a faulty 8th generation Kindle (SY69JL) to try and repair it.

It seems to be stuck on a book page, and does not respond when touched. The charging LED turns on when plugged with a charging cable. When I try to hold down the Power button to try and reboot it, the LED goes like this : green - blinking green - blinking orange - green... and the sequence repeats as long as I press the Power button.

Any ideas guys ?

Thanks in advance :)