Tekkit refuses to load

[CrashTheHedgehog]

Hello there guys, sorry if there is already a topic like this, but this is my first time on this site and I really want to play Tekkit so I hope you guys can help me out.

I have installed Tekkit on the launcher, but, when I go to open it, it just shows the Mojang logo for about 30 seconds before it says that the window is not responding. I have tried to re-open it on many occasions but it does not seem to work. I can install all the other modpacks on Technic so I don't know why this one will not work. Also, I am using 64-bit Java.

Thank you.