I have this issue everytime, I launch the mod pack from the launcher and it seems as though it loads on the task bar but not displayed but I can hear the background music, please can I get some support.
Not much to go on there. Console log should tell you what is happening. What launcher are you using? How much RAM have you assigned to Minecraft?
I would double check the java version, Sounds like windows is loading it fine but not displaying because java could be wrong version or some other reason.
