Do I understand that correctly?
You have reinstalled the game, updated the mod manager
threw in 100 mods and then started a new game ?
That can't work.
Try to start the game without any mod to see if it works.
If so, quit the game,
install the most important one first.
Script Extender, Improved Ui, WASD etc.
whatever you need.
Start the game and check if it works.
If it runs check your favourite mods for compatibility
with Patch 7 and install them one by one.
I wouldn't install too many at once, if a mod doesn't work it's easier to find it under 5 than under 100.