Norton (Symantec) requires its own Uninstaller Tool:
Download and run the Norton removal tool from here to clear them
http://us.norton.com/support/kb/web_view.jsp?wv_type=public_web&docurl=20080710133834ENSince Symantec is known to leave remnants behind, you can also go into Safe Mode (hit F8 repeatedly upon boot up), once in Safe Mode go to Advance Search > enter "sym" into the search box and see if anything comes up. Do the same but type in symlcbrd.sys , which is a Symantec Core Service BIOS reader. Do it again but type in Symantec, and again but type in NIS or NAV (depending on what you had installed on the machine). If you are uncertain of the files that come up on the search, right click on the file to show you Properties and you can tell if it belongs to Symantec...if it does you can delete it then empty your recycle bin and restart your machine. Reboot.
As for uninstalling Vipre, I would contact the vendor for uninstallation. You may also want to check this:
http://getsatisfaction.com/sunbeltsoftware/topics/cannot_uninstall_vipre. Reboot.
You cannot use a third-party uninstaller on a security program. You need to use the vendor's uninstaller tool to completely remove all the software. This could be causing your problems.
If you have problems with Avast after uninstalling, try an Avast Repair:
- Go to Control Panel > Add/Remove programs > Avast Antivirus.
- Scroll down and choose Repair function in the pop-up window.
- Reboot.
Let us know how this works for you. Thanks.