AutoComplete: Some people like it, some don't. Those who don't like it turn it off. Those of us who turned it off are now constantly being prompted to turn it on. By now, we despise it! How do we turn it off completely, with no more pop-ups asking us to turn it on?
It does seem that Internet Explorer really wants you to use AutoComplete. On a system with AutoComplete turned off, it will prompt you from time to time, asking to turn it on again. A Registry tweak will prevent IE's "helpful" reminders. First, close all IE windows. Launch REGEDIT from the Start menu's Run dialog. Navigate to the key HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel. Note that this key may not be present in its entirety. You may need to create the Internet Explorer and Control Panel subkeys. In the right-hand pane, look for a DWORD value named FormSuggest it will probably not be present. In that case, right-click in the right-hand pane and choose New | DWORD Value from the pop-up menu. Name the new value FormSuggest. Whether you found it or created it, double-click this value and set its data to 1. That should terminate the annoying reminder