Ipad 4 stuck in DFU Mode not restoring

Hello there,

I ve got an ipad 4 WIFI stuck in DFU Mode und i cant restore it.

The computer still recognizing the ipad but just in DFU mode. The screen is staying black.

It shows the error 4014 on itunes.

On 3UTools it says "no valid Serialnumber". And sometime it says "anable to switch from DFU mode to recovery mode".

Sometimes the ipads is trying to restart while restoring and the apple apears for a second but than disapears again.

Do you guys think its a software problem or a hardware problem.

Tryed running it barebone just the pcb but also not able to restore.

thanks peace üt