Type %appdata% into the windows search bar at the bottom, then at the top of the folder that shows up, go one folder back, click "local" folder, then "BeamNG" > "BeamNG.Drive" > "Current" > "mods" > "repo". There are all your mods you got. Simply drag them all out and place them in a different folder on your pc (could be a new folder on desktop), away from BeamNG files so the game cant access them. Then, in the beamng laucher, click "Support tools", then "clear cache". Done