Blue screen not long screw damaged
My IPhone won't boot, sometimes shows a blue screen, sometimes is simply dead, is a refurbrished one and I don't know it's history but I checked for long screw damage with microscope and it's not, it had charging problem before. I can reach DFU mode but not restore with ITunes or without, it doesn't charge, it doesn't boot if I insert a fully charged battery. Any suggestions? Thanks in advance
Is this a good question?