I tried installing Windows 7 via Boot Camp and a USB, now the stupid thing won't boot.

I'm getting horribly frustrated. I have spent the last day (probably 16 hours or more) trying to install bootcamp on my mac. It worked fine in the past but apparently now my superdrive is dead. So I have been trying countless methods of installing without a disc. Finally I found a way to have bootcamp just make me a bootable USB and install that way.

Lo and behold, it partitions and restarts, then boots to a "No bootable drive detected.. Insert disk and press any key" but it just sits there.

Holding option at startup does nothing, holding Command + Option + P + R at start up does nothing, holding shift at startup does nothing..

I have rEFIt installed if that has any bearing on it.

I'm trying really hard to keep myself from typing hundreds of curse words right now... I just want my computer back.