Removed Zonealarm now no internet

I planned to replace AVG free and ZoneAlarm 9 with Comodo but upon removing ZA I have no internet. I have successfully remove AVG free - I think.

I have tried disabling ZA on startup, rebooted, used ZA removal tools but still no good. The only way I have been able to restore internet is by restoring windows to a previous restore point but then I am back with ZA. I'm using Win 7 ultimate. I upgraded from vista ultimate (not clean install) some months ago. Zone alarm was working but I want to use an alternative.
I have run crap cleaner too, but to no avail.

Network adapters have the latest drivers and appear fine in device manager. After removing ZA, If I run Windows network diagnostics it suggests that there appears to be a problem with both the wired and wireless network adapters.

A side note: I tried re-installing Hamachi recently and that would not work - it couldn't find the network adapter, even though internet was working fine. Hamachi worked fine with vista previously.

Please don't tell me I have to do a clean install. but I'd love it if you can help.

 

anything like this I would ring my IP. As you are in Adelaide are you using Internode? I find they really try to help especially if you ring in a quiet time, eg 10pm.

 

If you put Windows 7 disk in, but hold down the shift button to stop it automatically starting up, .
Then click start, click run, and type in sfc /scannow, and the systenm file checker will replace damaged windows files (same as in XP, AND Vista)- Note the space after sfc, and before the/scannow.

 

I ran sfc /scannow with win 7 disk in. It completed overnight whilst I was sleeping, then closed the window so I don't know what the result was. Good to know that I should have a clean base.

I tried installing Comodo anti virus only and it loaded ok. Had to remove AntiVirus then I tried to install both Comodo anti virus and firewall - the install failed. This makes me think there are remnants of ZA that are preventing installation. ZA appearshalf installed - not working correctly so I have just reinstalled it and will try and remove it again with fingers crossed.