In English: You can consider unplugging the CMOS battery and letting it stay unplugged for one hour. (Not sure about your model though google it) Then put it back together and give it a try! They sometimes have a default password. Try varitations of "password" for instance "password" "pASSWORD" "PASSWORD" In Dutch: U kunt overwegen het loskoppelen van de CMOS-batterij en ze te laten unplugged verblijven voor een uur. (Niet zeker over uw model al google het) Dan zet het weer in elkaar en probeer het eens! Ze hebben soms een standaard wachtwoord. Probeer varitations van "password" bijvoorbeeld "password" "password" "password" Translated via Google Translate Vertaald via Google Translate
I believe it is the LCD. If it is the lcd then press and hold the power button and go make a cup of tea. Then come back and try talking to siri. If siri responds then give the cable area a good wack. If this does not solve it then try reconnecting the cables (Take it off and then put it back on). If it still doesn't work then check the screw that fell out and compare it to iFixits guides and put it where it belongs. Final resort: Go to the local repair shop and ask them to check it out. (Make sure the shop is not apple or you'll get sent off with a smack in the face. kcuf apple for not making things user-replaceable.). Hope I helped. ~oldosfan
If the Boot Files are missing you need to reinstall the system. However, you *might* loose all your data. However, booting to Windows Recovery from your windows installer disk and opening Command Prompt and entering *fdisk /fixmbr* might work.
I would suggest Redsn0w+Cydia=Jailbreak. You can't login to the app store anymore but there are games and tweaks and themes on Cydia. You may even find a tweak that allows you to login to the App Store.
Here is a list of steps you can try! (1) Software issues (1.1) Restore (Google it) Back up first! Or (1) Hardware Problems (1.1) Bad Screen (Change It!) (1.2) Bad Logic Board (Change it too! HARD and Back Up first!) Hope I helped!
I know this is a old question or something like that but in case you are still looking for an answer I've seen people disconnect the coms board before DFU restore and reconnect it after the restore is done. See if it helps