I just install my forum for first time and can't see any icon and images, in index forum and admincp , no images : 

 

Do you see any errors in the browser console? 

No errors

Post a link to the site instead of screenshots - it will help people with advising you on fixing it.

Have you tried running the "Something isn't working correctly" tool in the ACP under System > Support

Yes, as Tom S. noted, please run the support tool. Click "Something isn't working correctly" and then "Continue".

When the tool finishes, refresh the front end page and see if the issue is fixed.

If that does not resolve the problem, however, please file a ticket to support and we'll be glad to assist.