[John Rogers]

If it were me I would disconnect the LAN cable (hopefully NOT wireless) and then boot the PC in SAFE MODE.

Use the log file from your anti-virus software to see the name of the bad stuff. Once you see it, look to see where it is with regular old explorer app and look at the properties as it will be write protected then use the shell run as ADMINISTRATOR and change the ownership to you.

Hopefully this is NOT in the boot sector or other location where Windows keeps those thousands of OS files. If you can wipe it in the shell (command window), make a recover thumb drive if not done already.

Then boot up normally BUT NO LAN CONNECTION which of course your computer will not like at all then if the anti-virus is happy try to reboot this time with LAN connected to see what is up. If okay pull up your administration screen of your LAN to see what is connected (should be done weekly) and if anything you do not recognize delete the connection to see if anybody in the house is hollering!

Good luck John Rogers