I can not open SQL Server [closed]

As the message says, one or more elements necessary to start the application are damaged, or were deleted, or are not in the folders that should.

The quick solution would be to reinstall SQL Server Management Studio, it will take you less time than looking for those components that are missing or damaged.

If you are installing from an external unit (USB, CD, HDD or a network unit) I recommend that you first pass the installation files to your computer directly, this to avoid errors in case they get disconnected and can just happen the same thing that shows you the message you put.