Lost network Connection

[Joe Beda]

I have a small network of three pcs running WinXP.

PC-A and PC-B access files on PC-C.

On ocassion, PC-C will access files on PC-A and PC-B. PC-C will always
access the printer on PC-B.

All of a sudden, I think, a few weeks ago, there was a FireFox update
and when the computer rebooted, PC-C could no longer access PC-A or
PC-B: neither drives or printers.

PC-A and PC-B can still access drives on PC-C.

I have tried many things to try to correct the problem, including a
complete re-install of Windows. I still have the same problem. I would
like to think it is hardware, but how could others access PC-C and
PC-C can access the internet through the same ethernet connection?

Any help, Please!

TIA

Joe

[Lem]

What version of Windows XP is on each of the computers? Service Pack?

What happens when you try to access a share on A or B from C? Please
include full text of any error message.

I assume that you reinstalled Windows on C, correct? Did you do a
"repair install," a "clean install," or a reset to ex-factory state with
a factory-supplied "recovery" CD/DVD? Do you have a 3rd-party firewall
on C?

The Firefox update is not likely to have been the cause of the problem.
In fact, the problem may be on A and/or B. Can A access B and vice versa?

If any of the computers is XP Pro or Media Center, is Simple File
Sharing turned on or off? (Windows Explorer > Tools > Folder Options >
View ... scroll down to the bottom of the list.

Is there a user account with the same name and password on each of the 3
computers? For example, is there a user Joe on A, B, and C, with the
password the same for all 3?

Do this on *each* PC (replace A, B, C with the actual names of your
computers):
1. Click Start / Run
2. Type the three letters cmd
3. Click OK
4. Type the following commands and press the Enter key after each of them:
set comp > c:\test.txt
ipconfig /all >> c:\test.txt
net share >> c:\test.txt
ping A >> c:\test.txt
ping B >> c:\test.txt
ping C >> c:\test.txt
notepad c:\test.txt
5. Paste the contents of the result from *each* PC into your reply.

--
Lem

Apollo 11 - 40 years ago:
http://www.nasa.gov/mission_pages/apollo/40th/index.html