Crack but no connection

so i cracked a wep with bt4 and is right and all but now i try to connect with my laptop ( the computer i cracked the wep key with ) and it doesn't ask me for the wep it just says troubleshoot etc BTW I'm using windows 7 ultimate 64-bit if that makes any difference.

I tried it on another computer and i can connect fine so I don't know what's going on it doesn't even asks me for the wep key... If anyone knows whats going on or you need more info I can provide.

You are trying to connect to this WEP protected wireless network using Windows 7? We can't (won't) provide Windows support here. Have you tried connecting using BackTrack?

How do you know the WEP key is correct?