Minecraft Launcher Profile — As it turns out, the most probable cause of your Minecraft launcher not opening up is the launcher profiles that are stored on your system. In some cases, the profile files can get damaged which can cause the launcher to not startup.

Why is the Minecraft launcher not opening?

The “Minecraft won't launch” problem is probably being caused by driver issues. If you're using the wrong video card driver or the driver is out of date, you may meet this problem. In addition to solving this problem, updating drivers can also improve your computer performance.

What do I do if my Minecraft launcher is not working?

Close and Restart the Launcher

Sometimes, you can fix the Minecraft Launcher with a simple restart. While you can close it manually, it's best to shut it down from the process to ensure it's completely closed before opening it again. Press “Ctrl+Alt+Delete” to open a list of options. Click “Task Manager”.