Windows 7: 2 out of 3 laptops suddenly not connecting wirelessly

I have a Belkin_N_ADSL_829C73 wireless router, connected to my desktop via a cable.
I have three laptops and mobile phones using the wireless router.
Suddenly 2 out of the 3 laptops have errors:
IPv4 Connectivity: No Internet access
IPv6 Connectivity: No network access

The other laptop is working fine
I've rebooted everything concerned.

On one of the laptops concerned:
I've uninstalled the network adapters and rebooted the laptop to re-instal them.
I've reset to default settings in the laptop BIOS to clear the CMOS.
I've run a full system scan with the McAfee.
I've temp disabled the firewall.
I've uninstalled all wireless networks in the Manage wireless networs and reconnected to the Belkin.

All to no avail.

On the full network map the laptop and desktop are both displayed, on both computers the same, with dashed lines going to the laptop, but on command prompt net view neither desktop nor laptop list each other.

Where do I go next, please?
Thanks,
Pigpen.

Maybe you need to read about the McAfee update problem that has been causing wireless connection problems by the millions.

McAfee - Resolving the recent update issues with McAfee Consumer Products

Thanks, Chev.
You're a star.

I've removed McAfee from 1st laptop and, hey presto, internet is back.
Just in the process of reinstalling it, now, so it will hopefully all work nicely afterwards.

Then repeat on the other laptop, and probably on the third one, also, as it will no doubt update itself and lock me out!

The McAfee update problem has been killing off wireless on a bunch of systems lately.

I'm sure they will straighten out the mess pretty soon with a new update.

Well it worked on the first laptop. Daughter 1 is happy.

But not on the second or third (which soon after denied any connection at all).
I've tried uninstalling using the download from your link.
I've tried uninstalling from control panel.
I've tried restoring laptop settings to a restore point a month ago.
I've tried all the steps I mentioned in my original post.
I've tried the DAT6807/6808 fix from mcafee site, but mine was only on DAT6788.

They're just not connecting.

If you can post the ipconfig/all from these machines I might be able to spot other problems.

I have a feeling that you are still dealing with a McAfee created problem but maybe there is a way to work around it.

Thanks, Chev.
I have a suspicion that it is all linked to Mcafee, too!
Please find attached the ipconfig/all readouts from both laptops, pasted into word docs for ease.
Pigpen.

The .doc files aren't opening correctly for me using Word. A screen shot is better for me. Snipping tool comes in handy for this.

You should save the file below, unzip and run the file, your machine will reboot itself. This will fix most every problem related to the TCP/IP stack it will flush the DNS and reset winsock.

But I can't paste into this message window

You need to use the Advanced settings button which will give you options for managing attachments.