Mcafee Breaking wireless?

Hi. I'm not sure if this is quite the right place to ask this question but here goes.

My mother bought a new computer a while ago, specifically a AMD athlon 64 x2 dual core 2.59 ghz machine. I set up the computer for her, including the creation of a recovery disk (Thankfully I did this.) Included during the install was mcafee. It is running Vista.

Things went well that evening...connected wireless to the internet etc.

Next morning, internet connection stops working. I notice that mcafee and windows were updating.

I use the recovery disk to reinstall the OS ( or whatever it technically does) and click a box saying to NOT install Mcafee.

Yet...there is mcafee running after the recovery disk restore.
I remember that it failed during some updating...so I click the properties/options to disallow automatic updating...I do the same thing with windows automatic updates...

Ok...wireless works for a while...then I get a call from her that her internet isn't working on that computer again. I go visit...and again... same problem.

It can see the wireless...it has excellent signal strength....but the connection always fails.

I ask her if she updated mcafee...she says that perhaps a box popped up saying something about the trial period ending...(she is hazy about this) and that she may have clicked on updating something.

I uninstalled Mcafee and the problem persists.

Has anyone heard of anthing like this? My gut tells me that Mcafee blocked some port, or changed some setting...did SOMETHING that didn't get undone when I uninstalled it.

I have no experience with ports, tcp settings or anything like that...but I can follow instructions. Forgive me If my descriptions are using the wrong terms. Can anyone help or tell me where to go to start reading up?
The wireless card is from Linksys.

Thanks,

 

I would use this tool to remove McAfee - http://www.majorgeeks.com/McAfee_Consumer_Product_Removal_Tool_d5420.html
Then read this guide and make choices for protecting your computer - http://forums.majorgeeks.com/showthread.php?t=44525
All the choices can be found at this location - http://www.majorgeeks.com/page.php?id=20
If you still have problems with the wireless, post back here or in Networking.

 

After uninstalling Mcafee, clean the registry with regcleaner, ccleaner or something a like, throw McAfee right out the window and grab a copy of Avast or Eset Nod32. If wireless is still not working run "sfc.exe /scannow" from run menu as administrator and see if some corrupt system files are the culprit.