I install a pure Drupal on Windows/IIS6 share host.upload several modules in (sites/all/modules)  . when I want to enable some module together  , my admin pages become white!but front page and other pages work normally. after past about 30 minutes this page (admin pages) back and work!

please help me!

I installed a pure Drupal on Windows/IIS6 share host, and uploaded several modules in (sites/all/modules). When I want to enable some module together, my administrative pages become white, but front page and other pages work normally.