solved windows 7 sleep problem
Sleep mode was grayed out on new Dell laptop (Latitude E6420) on Windows 7.
The fix was to disable the legacy VGA driver, which came up with a yellow warning icon in Device Manager ("device cannot start").
Simply installing the latest Intel Graphics drivers did not fix the issue - the legacy VGA driver had to be explicitly disabled.
The fix was to disable the legacy VGA driver, which came up with a yellow warning icon in Device Manager ("device cannot start").
Simply installing the latest Intel Graphics drivers did not fix the issue - the legacy VGA driver had to be explicitly disabled.
Written on September 24, 2011