If you have uninstalled (a version of) Norton antivirus, he should do this:
Go to Start/run, type Regedit.
Drill down to
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD
Click on the plus sign preceding 'VXD'
A long list of VXD's unfolds.
Locate Symevnt.
Highlight it, and press the DELETE key.
Quit Registry Editor, and then restart your computer.
http://forums.techguy.org/showthread.php?t=113929
kids got a used windows 98 with NAV 2001 installed- very expired- i went to the uninstaller to remove it- got a pop up about shared files being in quarantine do i want to remove or leave- i chose to leave them- then comp froze- reset- then the black screen and a message about a file needed to boot NAV and it mentioned the 386 file- what file is that? do i need the original NAV disk to fix it so i can remove it? dorry this is vague-i was hoping to go into safe mode and delete nav???