IPv6 Connectivity - No Internet Access

I have Windows 7.  IPv4 Connectivity says Internet but the IPv6 Connectivity says No Internet Access.  I can surf online but it is really very slow.  If I go use other Wifi, it is fast and okay.  What should I check on my router just in case.  I have COMCAST.

Thank you.
adalonAsked:
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adalonConnect With a Mentor Author Commented:
What do you think is the reason then for slow wifi connection.  I have another laptop (Sony Vaio), also with Windows 7 that is working fine.  As I mentioned, if I connect using other wifi, it works just fine.

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JuliancitoConnect With a Mentor Commented:
99.9 % of routers and Internet Providers dont support IPv6 connectivity
IPv6 activated in Windows 7 network adapters is necessary for "Home Group" (file sharing feature between Windows 7 Desktops)
IPv6 activated is not the problem of your "wired Slow Network"
If you are not going to use the feauture of "Home Group" disable IPv6 in the LAN adapter and "leave" the Home Group (the one windows 7 enables and configures when installed)
Then Turn off sharing folder C:\Users
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JuliancitoConnect With a Mentor Commented:
wi fi signal? is good?
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adalonAuthor Commented:
IPV6 was disabled in windows 7
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adalonAuthor Commented:
i did disable IPV6..
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