I cant open any mod pack

[Caiomdc]

guys  i am with a problem, when i try to open any modpack, my technic closes, like it should do, but it doesnt open the game, its go back to the technic, and it happends in all modpacks,what do i do?'

[AetherPirate]

Windows 10 perhaps?

 

try Java 8u25 x64 and see 

[Caiomdc]

i will try..... but my minecraft works normal