Acer aspire 5002 WLMi monitor out

Hey guys,

I have an acer aspire 5002 WLMi and the monitor appears to be gone. So I hooked up an external monitor/ tv. I could see it boot up, but then it would go blank. So I went into the f2 bios and changed the monitor from auto to both. Now I can see nothing. What can I do to get this thing working?