Screen not displaying anything at all

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http://forum.xda-developers.com – I know it turns on, it vibrates, and the notification light turns on and stuff, but the screen does absolutely nothing. The bottom buttons work fine. I dropped it on a tile floor screen first and it cracked, most of the crack being centralized in where the lcd ribbon is on the top left. The screen doesn't look cracked or anything. I tried opening it and reattaching the ribbon, but it didn't work. Any ideas on what could be wrong and how to fix it? Id rather not have to spend $300 for a whole new screen. Thanks (HowTos)