Blender (2.79B) no shader nodes (?) // Fixed

hey folks,
Im having an issue where there are no shader nodes visible at all and I am not sure why that is. Take a look:

Just the screenshot doesn’t help.
Does starting blender with factory settings works?
Please post a list of all your active addons (most probable cause), a list of the files in 2.79/scripts/modules, and the file 2.79/scripts/startup/

alright I fixed it. I have no idea how but the (addons > startup) got deleted. I copied it and its fixed !