Question Lenovo Smart Tab M10 blank screen

Oct 8, 2019
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I bought a Lenovo smart tab M10 (TB-X505L) 2 months ago and everything was working fine for me until today. While I was using it, the screen went blank (black?). I have no idea what happened, I pressed on the power button and nothing happened, then held power button longer, and box came up with options to shut down, airpline mode and restart. I selected shut down, and plugged it in to charge (it showed over 70% power).

However, ever since it won't start anymore... when I power it on, it vibrates and I get the Lenovo logo and some Lenovo images, before it goes blank again. I have tried resetting it by pressing power and volume up buttons, but all I get is a grey background with white "FFBM mode" written on it and then it goes blank again.

I am at a loss with what to do now... I have searched the internet and haven't found anything that looks similar to my problem and ended up on this website. I hope someone can help me here before I attempt to go to a repair shop.