Unable to connect to the internet. Computer says Server DNS does not

I have a Dell Studio with Windows 7 Pro. I turned on my computer and I see that my without wire is connected, but I can't access the Internet. I checked to see the problem and I get a message saying that my DSN does not. I am connected to the Internet via the wireless thur my phone and I have no problem, it's only the thur my laptop. What can I do about it? I tried to restore the computer to a point when it was last working properly and it worked for a few hours, but as soon as I closed and logged on to the computer, I had the same problem. What can I do? Thanks in advance.

PS I'm not very good at technology stuff, simplification of the way to solve would be so great!

You have McAfee?  McAfee has been updated at the same time as the last batch of updates from Windows 7 and it seems to be the cause of this problem for most, if not all, users.

See the communication from this "criticism" - McAfee

Some customers may experience a loss of network connectivity and/or errors in McAfee Security Center after a recent update

You should make the fix McAfee, if necessary. There are corresponding communications for their enterprise products.

I got McAfee, but the connection has started working again on its own so I thought I was clear of problems. However, when I checked it says he was doing routine checks the updates in vain when I told it to do a manually. So stick with McAfee you don't follow their procedure of fix would have upgraded my PC at risk by not updated and, like other McAfee ads have since explained, the application did not refer to its database of threats correctly [and this could explain part of the variability of the symptoms of failure but all involved loss of internet connection]. Actually, I removed McAfee then installed Microsoft Security Essentials rather & my answer IE is faster I knew it [even though I had the Add-ons McAfee disabled for centuries].

I had to run the removal of McAfee Development tool a few times before and it caused a problem with the license if the PC was not connected to the internet during the abduction. Due cat of McAfee support reset their files in order to allow the relocation-reactivation. Here is their link cat - McAfee - media contains the link to the cat

- - - - - - - - - - - - -

If you do not have McAfee then Windows update than kb2705219 can also be a cause as the uninstall that appeared to solve the problem for some users [but I'm not particularly convinced by this]. To uninstall an update - control panel, programs & features, [left side of the window] see installed updates. Wait until the system has finished the research for the list of updates. Select update required, then right click and Uninstall.

Tags: Windows

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