If you have any other security programs installed uninstall them to see if they play a role. When following the tutorial in the next paragraphs look for Zone Alarm left overs (look for Endpoint and Zone Alarm) and specifically for vsutil.dll and disable them.
We are gonna take a look to see if there are some old drivers of your previously uninstalled security programs are still around. Go to Device Manager --> View --> show hidden devices --> now look under Non Plug and Play drivers --> when you see a driver that belongs to your previous security programs click right --> uninstall ---> reboot your computer.
When the problem persists make sure there are no auto starts from your previous security programs. Download
Autoruns and run it.
This program finds about all auto starts in Windows. This tool can therefore seriously damage Windows when not handled properly. After starting go to Options and choose to hide Windows and Microsoft entries, to include empty locations and then push F5 to refresh.
Now check all entries to see if there are references to your previous security program. When you find them untick them. After unticking reboot your computer and see what happens.