Turn off Drupal caching without Access to admin panel
Yes, you can run Drush under Microsoft Windows if you use the Drush Windows Installer. Drush will allow you to turn of caching with the command:

drush en cache_disable --yes


It is not easy to set up the Drush Windows Installer.  As an alternative, you may consider explicitly set variables in your settings.php to turn of various caches.  Note that when set, these values will be locked to whatever is set in the file, and cannot be changed through the admin interface (so remove them when you're done debugging).

To disable page, JS, and CSS caching, set cache, preprocess_js, and preprocess_css all to '0' in the $conf array:

$conf = array(
  'cache' =&gt; '0',
  'preprocess_css' =&gt; '0',
  'preprocess_js' =&gt; '0',
);


If you set other values by means of the $conf array, add these fields, do that, rather than replacing the entire array.