ICS not working

#1
Installed W7 on two laptops and created ad hoc network with Internet sharing enabled. Worked for a few days then stopped. Have tried to set it up again several times to no avail. Any ideas short of a clean install of W7? The host is connecting to the internet via an Option 3G Ultra Expresscard usng AT&T 3G.
Originally both showed ad hoc as Home then changed to Public Unidentified.
After much exploring found double clicking the net in Manage Wireless Networks, I changed the Security back and forth from secure to open. Then was able to change the net type to Work/Home.
TIA
Troy
 


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