Feed the Beast First Start-up, Not Loading

[ninjafrog741]

I recently got FTB on my new computer, and I have tried to download some modpacks. It downloads them correctly, then gets to the Mojang sceen and just closes. What should I do?
Information:
Windows 7 (64 bit)

 

[Dorque]

http://forum.feed-the-beast.com/threads/important-info-post-format.578/

 

[ninjafrog741]

I probably should repost this then. :/

 

[Dorque]

I probably should repost this then. :/

Just edit your post. I don't ever intend to come off mean, but we can't help you without that information and I have to post that too many times a day to write a polite explanation each time