Windows 7: no join a homegroup

hi everybody, i hope i can find solutions to this problem.

we have 7 computers in the house, a notebook and 6 desktops. all pcs are running windows 7 home premium, 4 of which has dual core processor and 2 have i3 core processors and the notebook is running windows 8. we also have a router and sure enough we have created a homegroup. the notebook running windows 8 can join the homegroup. the 4 pcs which have dual core processor can join the homegroup, my problem is with the 2 pcs with icore 3 processor. it cannot see my homegropu hence the is no join a homegroup in network and homesharing. i have enabled network discovery in all pcs.

thanks

Hello ayongkot, and welcome to Seven Forums.

You might double check everything in the tutorial below on the 2 PCs to see if anything may have been missed.

Homegroup - Add Computer or Join

Hope this helps,
Shawn