Why my screen is Blank?

It's my understanding that the Fingerprint/Home Button without un-enrolling your fingerprints and disabling the fingerprint feature, the phone gets bricked within a month. Did you have your LCD Assembly replaced since you've owned the phone? The best-practice is to preserve your old home button at all costs, even if the button is in trouble.

I'd recommend downloading your IPSW file from iClarified, then holding down Option or Shift, and clicking Restore iPhone from within iTunes. Specify the big file when asked, and see if that helps.

IPSW files:

http://www.iclarified.com/750/where-to-d...

Apple Error 53 says on Apple's Website:

Errors: 1, 3, 11, 12, 13, 14, 16, 20, 21, 23, 26, 27, 28, 29, 34, 35, 36, 37, 40, 53, 56, 1002, 1004, 1011, 1012, 1014, 1667, or 1669.

Your device or computer might have a hardware issue that stops the update or restore from completing.

Check that your security software and settings aren't blocking your device from communicating with the Apple update server.

Then try to restore your iOS device two more times while connected with a cable, computer, and network you know are good.

Make sure that your security software and settings are allowing communication between your device and update servers.

If you still see the error message when you update or restore, contact Apple support.

If you still see the error message, check for outdated or modified software."