I have no idea what to do, I tried going into recovery/download mode, removing the battery, trying to get it recognized in Odin, nothing works.
Did I just ruin my phone? :/
I was having some problems with a failed ROM install so I just flashed a stock rom with ODIN, rebooted, everything was fine. Then I went to install ClockworkMod-Recovery_188.8.131.52 so that I could install some custom ROMs, the S2 rebooted and I saw the startup screen and then it just went black, but I heard the boot sound. Now no matter what I do I can't get it to boot up. Or if it is booting up the screen is not working.