Windows XP machine will not see other workgroup machines

I have a client pc which will not see other pc's on the workgroup. I has to replace the modem/router on the network and after I did that all other machines worked fine except one.

On the same pc I can not change the workgroup name either even though I am logged in as administrator. It is greyed out. It is the correct workgroup name anyway but a bit odd I thought.

Prior to modem change the pc could see other computers and network storage drive. All other computers on the workgroup can see the network storage drive and other computers fine
This computer is the only one connected via wireless. It has email and Internet connection.

Can anyone assist??
Who is Participating?
akahanConnect With a Mentor Commented:
Almost certainly.  Enable "client for Microsoft networks" in your network settings.
Try flushing DNS

go to the command prompt (win + r to start the run window, type cmd)

type ipconfig /flushdns
On the "problem child" PC, get a command window and type services.msc to bring up the list of services.
Make sure the "computer browser" service is running.  If it is not, set it to start automatically, and then reboot.  See if the "workgroup" name selector is no longer greyed out, and if your other problems are solved as well...
Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

Since only the PC using the wireless connection, get on the Internet without problem, so I suspect the Wirelss LAN IP is sasigned by the wireless router and it's belong to different IP range with other PCs.
Also, the PC maybe direct connect to Internet by PPPoE, and this PC now maybe become a Internet connection gateway for other PCs.  It can explain the problem of workgroup name cannot be changed by administrator.
You need to check in both wireless router and this PC's Internet connection.
Hope this helpful,

Disable the windows filewall and check.
To disable the windows firewall

Control panel-> windows firewall -> turn it off.
mbellettyAuthor Commented:
akahan: I can not see a Computer browser service listed in the services area.  Is this why this issue is happening?
When you disable the Windows Firewall service on your Windows XP Service Pack 2-based computer, the Computer Browser service stops after five minutes and Event ID 7023 is logged in the Event Viewer

For the computer browser problem, please refer this article for troubleshooting
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.