Lightroom collections have disappeared!

[stephaniew45215981]

Please help!! I restarted my computer and the 20 collections I made and started editing have disappeared!!!

[Rob_Cullen]

Do you mean - You do not have a Collections Panel on the left side of the Library module?

Do you mean - You cannot see any Collections listed inside the Collections Panel?

Have you 'collapsed' the Collections list by clicking on the triangle on the Collection Panel Header?

Is it possible you have started a new Catalog?

Some more detailed information (and screen-clips) will help other users with an answer for you.