mobile

Good day, everyone! I would like to ask for help from all of you - I am truly desperate.

I tried to root my phone yesterday, anyway, here are the facts:
Model: Samsung Galaxy S3 (International/i9300)
Software used: Odin3, v 1.85

When I connected my phone, it was detected, and started flashing my phone. It was set to reboot automatically after flashing. The PASS! box appeared at the upper left side of the ODIN software, then the phone reboots. The "Samsung Galaxy SIII i9300" logo shows up, followed by a screen which shows several things, like SD card marker, installing SU, etc.

After both these screens, the boot logo appears again, then is followed by a black screen. In my laptop, the "USB Device detected" sound is heard, and when you detach the phone, the "USB device removed" sound is heard. I can still see the device via Odin. Even the phone software installs. However, there is only a black screen.

I tried recovery mode, CWM screen shows up. I tried Wiping Data, Wiping Cache, Wiping Dalvik Cache, but still, I can't seem to get past the boot logo.

I can pretty much open Download Mode and Recovery Mode.

What would be your diagnosis? And what possible solution can you suggest? Thank you, and more power!