I have several (8+) pc's in my home connected to a Linksys router and Cable Modem.
All except one computer can access the internet fine. Recently, one laptop can't access the internet (a Sony Vaio laptop).
I'm running Symantec Norton Antivirus which is up-to-date. Full Scans are run regularly (daily). A few days ago, NAV found 2 trojans (W32.SillyDC, Backdoor.Tidserv!inf) that could not be deleted, fixed, or quarntined. I rebooted in safemode to delete the infected files which were in the IE temp folder.
As of this morning, this laptop cannot access the internet at all. I checked my network connections and found that my Wireless and LAN connections TCP/IP properties show the IP '18.104.22.168' in the Preferred DNS server, and an Internet Connection Gateway shows up on my Network connections display. Even after I change the IP and remove the Internet Connection Gateway, they both are restored to these values. So I can't change the IP address of the TCP/IP Preferred DNS Server.
I also have the same issue on this laptop when I am hard-wired to the router (both the Wireless connection and the LAN connection show '22.214.171.124'.
- My laptop has access to my LAN - I can access other computers on the network.
- My laptop does cannot access to the Internet.
- TCP/IP settings stuck on '126.96.36.199' for both Wireless and Wired (LAN) connections.
- Norton Antivirus has always been up-to-date and full scans run regularly.
- A new Internet Connection Gateway appears on Network Connections Panel.
I'm running XP Home sp2.
Any help would be greatly appreciated.