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Asus Zen notebook can't access wirelessly

Posted on 2014-03-13
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Last Modified: 2014-03-24
I am working on an Asus Zen Notebook running an Intel Centrino Advanced N-6235 on Windows 7. The notebook can connect wirelessly at other sites including the user’s home and another enterprise network. On our network, other devices (iPad, iPhone) can access it automatically except the notebook. Wireless Zero Configuration was already set to “Start” and the notebook automatically accessed our “guest” (low bandwidth) network until I disabled its auto-connect feature as to not conflict with authenticated wireless network access.

I remove the notebook “homegroup” configuration (which has been noted to cause these issues), installed the latest Intel driver and “CCleaned” it but after restart, the same issue recurs after testing on other networks.


Please help! Thanks.
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Comment
Question by:Tech_20
11 Comments
 
LVL 34

Expert Comment

by:Michael-Best
ID: 39926916
Use a previous restore point to undo the changes that you have made.
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LVL 15

Expert Comment

by:gplana
ID: 39926921
Can this notebook connect to any wireless? If not maybe you have wireless device off (some laptops allow to disable wireless) or maybe it has some hardware problem. In case of hardware problem you should go where you bought your laptop to ask for help.
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Author Comment

by:Tech_20
ID: 39926961
As I stated before, the notebook can connect wirelessly at other sites including the user’s home and another enterprise network as of today. The hardware is working, so far it points to a software issue.
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Author Comment

by:Tech_20
ID: 39927008
@Michael-Best: The issue was occurring before the homegroup configuration change (please refer to question # ID27052135). I reconfigured that setting to rule out that possibility.
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LVL 92

Expert Comment

by:nobus
ID: 39928601
well i had similar troubles, ending up in a bad wireless adapter.
so i suggest to test with another adapter ( you can take one from a working laptop, and exchange it for testing)
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LVL 2

Expert Comment

by:dshin10
ID: 39932208
Possible that a wifi adapter exists in the affected geographic area with the exact same mac address as your laptop. mac clone is done to pcap your connection, possibly also to maintain pcap for MIM and PSK cracking using 4 way exchange. Getting another wifi adapter (cheap usb) to test can see if this is the problem. If so, change your ap settings and block your mac address on that ap for any future connection and continue to use the usb wifi.
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Author Comment

by:Tech_20
ID: 39934262
@nobus, @dshin10: Thanks. I'll look into testing/replacing the wifi adapter.
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Author Comment

by:Tech_20
ID: 39935292
So far the wireless adapter diagnostic test confirmed the hardware was working and can detect nearby WAPs. The Intel hardware test to a WAP failed (association test). A co-worker in Networking confirmed there was no MAC address filtering and he could see the MAC address when I was able to connect via guest account access (limited bandwidth) along with getting internet access on a browser.

The co-worker in Networking also confirmed there was no competing MAC address from another wifi device preventing access. I deleted an anti-virus app (part of the original image) that was controlling/interfering with Windows Firewall to rule out that possibility of it preventing access.

After a restart, the issue now is I still can't access the authenticated network even with good credentials, just the guest account. Help.
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Author Comment

by:Tech_20
ID: 39935354
Can anyone think of any immediate registry settings that I can configure before I reimage the Zenbook?
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Accepted Solution

by:
Tech_20 earned 0 total points
ID: 39937627
Everyone, thanks for your help but I was able to solve it. Concisely, we did the following before successfully restoring the wireless connection:

* ran a utility to remove any residual files and correct any registry errors interfering with the normal software usage
* reinstalled the wifi driver
* created a new wireless profile manually

So far, no issues reported. I'll plan to keep the question open for the next 24-48 hours.

Thanks again.
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Author Closing Comment

by:Tech_20
ID: 39949798
The issue at first appeared to be hardware-related but after thorough testing, it was the software that was faulty (residual files, Wi-Fi driver and a corrupt wireless profile). Unlike other wireless connection issues, which are often solved by the others' suggestions, this one was different.
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