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I have a Sony Vaio with intel 5100 AGN wireless adapter & Vista OS.

The problem I have is that 9 times out of 10 it will not connect to my home or office wireless network. Eventually it does, though only after switching the adapter on and off several times or rebooting the machine. Sometimes I also have to restart the wireless router.

It will always seem to connect in that I get the connected icon in the notification area (though often without the internet globe symbol) though it will not connect to the net or to any other machine or printer on the network.

Some other useful info:
Both the home and office routers are the same model (Comtrend) and both work fine with other PC's

I often have bluetooth problems also - can take a while for bluetooth to start (I use a bluetooth mouse) and I have 3 unknown bluetooth peripheral devices in device manager

I have McAfee internet security installed

I have tried:
Disabling the firewall
Removing and readding the wireless and bluetooth devices
Disabling IPv6
Driver & OS update
A clean install

Nothing has resoved this issue which is becoming a pain as I can now spend up to half an hour each time trying to connect.

Any help is very much appreciated.
 

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Hi -

The Intel 5100 is one of the best wifi's available. I have one in this system and it performs flawlessly.

I think you'll find McAfee to be the problem here. I suggest that you remove it. Download the McAfee Removal Tool (MRT) to your desktop. RIGHT-click on the MRT icon, select "Run as Admin". When it finishes, re-boot.

MRT - http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe

Then reset the Windows Firewall to its default settings -
START | type FirewallSettings.exe into the start search box | click on FirewallSettings.exe above | select the Advanced Tab | click on "Restore Defaults" | Click Apply, OK

Use AVG for a/v if you wish - http://free.avg.com/download-avg-anti-virus-free-edition

Make sure that you have the most recent Intel 5100 wifi driver. Go to Intel's site -

http://downloadcenter.intel.com/Product_Filter.aspx?ProductID=3062

You can check your system manufacturer's site, but I have found they are ususlly 8-12 months behind.




Regards. . .

jcgriff2

.
 

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Thanks - I am having the same problem on a newish Samsung laptop - every couple of days the system will not connect to the internet although it will connect to the network- "limited connectivity". I will normally get around it by rebooting or doing a wireless repair/fix but it is a real pain.

Two things - I also run McAfee security but am loath to delete it as it is a bit of a nuisance to reload it from the Samsung discs. Is there a history of this security package blocking the wireless?

Secondly the Intel web site warns that some OEM manufactures change the drivers and suggest that we should use the OEM site for driver updates? Is there a risk in using the non-OEM dirvers?

Regards
 
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