Does not open or install correct on Vista

I tried to install CIS4 on a Vista laptop Acer Extenca 5220. It seems to install correct but after restart CIS does not show or start and I can’t open CIS with the CIS icon that is on the desktop. Also the internet stops working after restart.

Are there other security programs running in the background that could interfere? Try disabling them.

Can you see if the Comodo Firewall Driver is loaded properly? See attached image.

Also make sure your previous firewall solution was properly uninstalled. What was your previous firewall solution. You could try the following as well.

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 push Escape and 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.

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Do I have to install under Admin on a vista laptop\pc?

Did you install under a LUA?

Try updating the Comodo Internet Security Helper Service (control panel, admin tools, services, right click on “Comodo Internet Security Helper Service”, properties). The logon Tab for the Service should currently show Local System Account and Allow service to interact with Desktop. Set This Account with your Logon ID and Password (+Confirm) and then reboot. Does this help or not?

I found with your help that this laptop (not mine) was infected with a lot of malware and I had to put it back to Factory install. After done that CIS installed perfect.

Thanks for the tips.

Congrats with fixing it.