Default [Q] Samsung Galaxy S i9000 won't turn on after using Odin

Okay, so I tried to flash on Android Gingerbread on Froyo though Odin. I assembled all the files rightly and still it won't re-partition. I unplugged the USB cable and now the phone doesn't turn on. It shows "Computer ! phone" kind of symbol, but download mode STILL works. I also kept trying to flash, but Odin hangs up and then fails. I have checked all the threads related to this, but those didn't do it for me. Any solution, please?