Couldn't get the reply button to work in thread started by Brett928S2 so started this new message thread on problems with homegroup.
Like the others in the message board, I spent the good part of weekend trying all combination of the different solutions listed in the thread to get my homegroup working, including the one that seem to work for others of getting out of homegroup shutting down the computers and restarting a new home group and having other PCs join. None of these seemed to work for me. But I finally tried this approach which worked. Hope this helps others with same problem.
1) Goto the homegroup "advanced sharing settings" then to "file sharing connections" and change 128 bit encryption to 40-56 bit encryption
2) change password, from the automatically generated one, but make sure the password length is 10 letters or numbers (not sure why but when I had less than 10 length, the homegroup would not work)
3) Have the other PCs join the new homegroup