This happened after following Guys Root method. I followed everything to the T. Installed everything including Kies and AGAT flashed via Odin and yadadada. Now what happened is my comp wont recognise my phone and SD card unless I'm in Recovery and go to usb storage. All it shows are removable disks like H, I and F. I even removed and reinstalled Kies. I don't know what would have gone wrong.