I would check your drivers: http://www.microsoft.com/windows/compatibility/windows-7/en-us/default.aspx
and then try setting up your workgroup again: http://windows.microsoft.com/en-US/windows7/Join-or-create-a-workgroup.
Hopefully this will resolve your issue, let me know how this works!
Cheers,
Tara
Installed Windows 7 on one system my other computer was runnig XP. I got the Workgroup going and life was good. I then udated the second computer to Windows 7 still using Workgroups and things still worked fine - sharing and printing. This worked OK for 5 days. For some reason the Workgroup name on the first system changed to WORKGROUP. I changed it back to what I had originall but now neither system can share. I get a error 0x8000035 Path not found. Now when I try to set up sharing I no longer get an option to setup a Workgroup the only option I get is a Homegroup. My router does not support IPv6 so I cannot setup a Homegroup. Is there a way to force two Windows 7 systems to use Workgroups instead of Homegroups. This is really frustrating because both Windows 7 machines were communicating fine until the workgroup name somehow changed. I think the answer may be I need a new router.

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