I've got a computer here that will not load web pages. If I go into a command prompt, and ping www.google.com, I get nothing. Actually, I get "Ping request could not find host www.google.com. Please check the name and try again." But if I ping 72.14.205.99 (one of Google's IP Addresses), I get 4 Packets Received.

Same with the web browser. I type in www.google.com, and I get The webpage cannot be found. I type 72.14.205.99, and Google comes up.

I think I've got it narrowed down to the PC itself. When I hook my laptop into the same cable, everything is fine. My guess is some type of virus is blocking the lookup.

Dell Dimension 4550
Windows XP Home SP2
512 MB RAM
Pentium 4 2.53 GHz
IE7 (7.0.5730.11)

I ran Malwayrebytes, thinking maybe some malware may be the problem. It found 8 problems, but fixing them solved nothing.

I can also ping the loopback so TCP/IP is good.

Thank you for any help!