URGENT HELP PLEASE! PROBLEM WITH MY iDL

[Shimashimatchi_Pal]

so i noticed the screen on my idL was getting quite dim so i thought i'd change the batteries, so i swapped them out for new ones and now it wont turn on. i have tried several different batteries (including the ones that were working fine before) and the screen is just black. it was literally working fine just 5 minutes ago??

User Burotchi suggested there might be a problem with the wire so i opened it up and i have NO idea what im doing, i dont know if this is all wrong or right so can someone please help identify the problem??

here are pictures:

 

[Jhud]

I don't see anything wrong (though I'm far away from an expert). I suggest taking the motherboard out as well and checking if the ribbon cable on the screen has come undone. Ribbon cable is that orangey thing attached to the screen, check if everything is well attached.