Windows 7 freezes when connected to a network

I have a computer that is running Windows 7 x 64 edition and an Acer notebook running Windows 7 x 86 edition and I have this problem on both of them.  The BIOS is upgraded to the latest version, all Windows updates and the latest drivers are installed.

If I connect a router that is permanently connected to the internet (internet is provided through the connection standard network) or one of the computers, everything works fine.  My computers are always on and even for the days without rebooting.

However, as soon as I connect to the internet manually (or a virtual private network) via the network and sharing Center (which means that my network sharing Center shows that I am connected to my network and the second connection), the computer hangs after a few moments.  If I nothing, just leave the computer on idle when you are logged in this respect, it can take anything between 5 minutes and a few hours before it freezes.  If I'm working on the pc, usually only a few minutes.  If I listen to music (for example Winamp) while working, less than 5 minutes.  This happens regardless of what application I work in (Visual Studio, Outlook, Excel, Google Chrome) and no matter if the request, I work uses the network that I am connected or not.

OK, the gel.  What happens is the computer crashes completely.  The mouse pointer stops to move and no keys or whatever it is that you can get the computer out of the gel.  Must reset hard.  No event log is created.  If music was playing before the Frost, the last note that was played just repeat until reset.

It's not a too big problem on my pc that I'm usually connected to a DSL router, but on the laptop that I use for travel, it is a huge problem because I connect to the internet using a 3G dongle which shows as a network that I am connected in the network and sharing Center.

Laptop is an Acer Travelmate 6592 G.  I used to run Windows Vista x 86-based computers and never had this problem.  I had this problem on my pc and laptop with Windows 7 x 86 edition, and then a clean installed x 64 on a new partition on my pc.  The problem is there from the beginning (before anti virus or all other installs).

My apologies.  I should have updated this thread.

On my side, it seems that AVG was the question.  As soon as I removed AVG, the problem disappeared.  I am now using Avira on my pc with Microsoft Security Essentials on my laptop... Did not have a single freeze since about June and my computer is never turned off.

Tags: Windows

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