Bear with me while I describe this one, I’ve tried literally everything I know, so I have plenty of details of what is wrong. I’ve never seen this problem before.
My dad’s home network is a very standard, simple wireless network. Cable modem attached to a linksys router, 2 computers connected to it wirelessly. Here is what is going on:
My dad’s computer (we’ll call it computer #1) works perfectly. Connects to the network, browser can open any domain, etc… no problems, no complaints.
My mom’s computer (#2) can connect to the network, but no website will open when you type a domain into the browser.
Both computers have the same DNS server IPs. In fact, when you put an IP address instead of a domain name into #2, it opens just fine, but when you put the equivalent domain name in, it will not resolve.
It does not appear to be a hardware issue on #2, as the same thing happens when connected via ethernet cable (which is a different NIC in a different PCI slot). It is not a router issue as #1 functions perfectly on the same router. My best guess is a software issue on #2, but I can’t figure out where it is.
To make things more complicated, #2 can’t ping #1 by IP address, which to me seems like it should be a completely separate issue from the one mentioned above.
I’ve never seen this kind of problem before. Anybody got any guidance? No apparent malware or viruses on #2. I’m stumped, so network gurus, let’s have it.
(#2 is a Dell, few years old, running XP SP2. As I’m 2000 miles away I can only get details by talking one of my parents through the required steps, so I’m sorry if it takes me a while to answer questions)