https://social.technet.microsoft.com/Forums/sqlserver/ru-RU/f21e6836-659d-45f5-8a37-54308822120f/error-when-loading-sql-server-management-studio-and-ssrs-reports
авторBased on my understanding, you come across an exception “System.DllNotFoundException: Unable to load DLL 'gdiplus.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)” when loading SSMS and SSRS reports.

In your scenario, the issue is caused by that the GdiPlus.dll is missing. Please search for GdiPlus.dll file under the directory C:\Windows\WinSxS, copy the latest GdiPlus.dll file from C:\Windows\WinSxS\x86_Microsoft.Windows.GdiPlus_6595b64144ccf1df_1.0.3790.3126_x-ww_7E5E4116 location to C:\Windows\system32 folder.