[IMPORTANT!] Phone Isn't Booting!

So, I searched in Forums for same or similar issue but didn't find Solution,
SO, I was Installing Carbon Rom For My Samsung Galaxy S II (GT I-9100)
Via Rom Manager Lite "Install From SD" Function, When So when I was On Boot Screen I saw It taking long time, But didn't do anything, Then suddenly battery fell off! I put it back in, And Can't Boot! I'd Try CWmod recovery, But I couldn't boot in it Before and used Rom Manager's Solution, So I can't boot that way Too! I See Battery Level when charging Though.
PLEASE help, Best Regards, Exillar!