Cubase LE The program does not open

I installed Cubase LE - When I try to open the program I get a message that tells me that the theme of windows is not compatible, the message also recommends using the AERO themes windows. I changed the theme by applying AERO windows but when I try to open the Cubase LE program always receive the same error message.
Can you help me please?

Hello,

Please review the following KB article:

https://www.steinberg.net/nc/en/support/knowledgebase_new/show_details/kb_show/windows-7-error-message-dwm-composition-is-not-running-please-switch-to-an-aero-theme.html