So everything was fine last night. I was running the stock DI18 build and did the One Click Root. This morning, I woke up and decided I wanted to try and use a custom ROM (Quantum). I read that I needed to update the modem to DK28 to use the ROM so I DLed the files to update. I opened Odin and got the Tar and PIT files setup, plugged in my phone and got Odin to recognize it. Hit start and nothing happened. Rebooted into recovery mode and Clockwork started running a backup and restore on my phone. After it was finished, I selected the reboot phone phone option to boot up the phone. Now it won't boot up past the Samsung screen. Everytime I plug my phone into my PC, it says that the device has malfunctioned and won't show up in Odin. I have uninstalled my Samsung drivers and reinstalled them and it still says device has malfuntioned. No matter what USB port I use, I get the same error. I can still boot the phone into Recovery and Download modes. What can I do to fix this? PS, everyone says how easy it is to flash and load roms and modems and stuff, but it really isn't lol.