Hello,
There are few things to check.
1) Do you see any Symantec Application under Add/ Remove Programs?
Liveupdate, LiveReg, Liveupdate Administrator, Reporting Agents, etc
2) In Control Panel, if you see Symantec icon's, did you try Right Clicking them and clicking on "Delete"?
3) Check under the C:\Program Files\Symantec, do you see any folders?
Make sure you delete them.
Please use the tool Clean Wipe as a last resort.
You can use manual uninstallation procedures before:
How to manually uninstall Symantec Endpoint Protection client from Windows Vista, Windows 7, and Windows 2008 32-bit
OR / AND
Open a Webcase
You can log a case on web portal to receive tool.
QuickStart Guide - Create and Manage Support Cases in SymWISE
How to update a support case and upload diagnostic files with MySupport