Original title: cant start windows firewall
While browsing on firefox, I randomly got a nasty trojan worm that AVG got rid of, though it needed a full reboot to get rid of it and the results showed getting rid of 10 files and 4 registry entries. Its competely gone now, but there is a residual problem that I cannot start the windows firewall. In order here is the list of errors:
Through windows security center: Security center cant turn on windows firewall.
Click on the option to turn it on manually: Windows Firewall settings cannot be displayed because the associated service is not running. Do you want to start the Windows Firewall service?
Click yes: Windows cannot start the Windows Firewall service.
So then I go through task manager -> services -> services
Brings up the services window, I tell that to start the Windows Firewall service:
error 1068: The dependency service or group failed to start.
From other answers I have seen, this looks like the virus corrupted my copy of secdrv.sys, but I cannot find anywhere to download a correct copy of this file, and I do not have an install disc because my windows came preinstalled on my laptop. I need to know where to get this file, or if this is not actually the answer, then what is actually wrong and how to fix it.