Unable to connect to the wireless network

I am unable to connect to the wireless network getting error the connection attempt cannot be completed,followed Microsoft  help site https://social.technet.microsoft.com/Forums/en-US/52621e0d-729c-4c4b-be93-334d2fa014df/windows7-wireless-connection-the-connection-attempt-could-not-be-completed?forum=w7itpronetworking

Windows 7 Laptop

but no help ,please help me on this
Maturi KiranAsked:
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JohnBusiness Consultant (Owner)Commented:
Reinstall the Wireless network driver and then restart. That should work.

It may be if the laptop is old enough that it has a G card not supported by your router
Maturi KiranAuthor Commented:
Already  resintalled network drivers
JohnBusiness Consultant (Owner)Commented:
Is the card type compatible with the router?
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JohnBusiness Consultant (Owner)Commented:
Another thing to try is a different USB Wireless adapter to see if that works.
can you connect to other wifi networks?
WORKS2011Managed IT Services, Cyber Security, BackupCommented:
Are you using Intel® AMT? If you have a Lenovo laptop there's likely a window that pops up (only once) after you make a wireless connection. If you choose yes wireless doesn't work afterwards. The window looks like this
intelSelect "No" and wireless will continue to work.

To get the AMT window to popup delete the current wireless connection and add it back. It comes up after the wireless password is added and the connection reports "connected".
Steve JenningsSr Manager Cloud Networking OpsCommented:
The link you posted has to do with connection errors related to establishing an SSL/TLS session over wireless with what "appears" to be an untrusted CA. The posts on this thread seem to be addressing a completely different problem.

Are you getting an "untrusted CA" message?

When you said you tried the suggestion from the MS site, are you saying that you properly installed a trusted cert and it still doesn't work, or are you saying you checked the "do not prompt . . . " box and it's still not working?

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