Windows 7 of intermittent wired lan/internet connection.

In a Word, my Windows 7 Ultimate (64-bit) PC intermittently drops his internet connection. Why?

Reminder: My PC is connected to my DSL modem/router that is directly connected to the telephone line. I also have wireless connectivity enabled in the router for a laptop to the wireless network.

Every few hours or more, using my PC, I find I can't access the internet and the pages will not load. Finally, Windows7 will update the network icon in the taskbar to display the symbol of an exclamation mark on the network icon. Opening of the network and sharing Center will show the red cross between the 'multiple networks' and 'Internet '.

I'm running VirtualBox of Sun on this machine and creates a network connection for itself. This doesn't seem to affect the intermittent dropping (i.e. drops intermittent occur if the connection of VirtualBox is used or not) and indeed, I installed on the two other machines (Windows XP and the other Vista Home Premium (32 bit)) of VirtualBox and these work without any problem.

When the connection does not drop, I can't access internet pages, or I can access the router at http://192.168.1.1/ web administration page, so I guess I lost all local LAN access too.

It certainly isn't the router (or the Internet itself) as my laptop, using the wireless connection (and running Vista Home Premium) continue to be able to access the internet (and the pages of the router web admin) very well.

Whenever this happens, I can immediately restore all the internet and local network access by opening the network map page, disable the "connect to the Local network' and then the reactivation. Give it a few seconds and all is well again. I guess that's because, under the MISTLETOE, it actually makes a "ipconfig/release" then "ipconfig / renew".

The allocation of IP for Windows 7 computer is the same before and after the "drop". I have a DHCP server on the router issuing IP addresses, but my Windows 7 computer uses a static address (192.168.1.2).  I also tried with a dynamic IP (served to the ADSL router) and there is no difference.

There is also no specific measure in the event logs various system, other than what relates to the abandonment plug which is a "customer DNS event" and it is generated once the connection dropped and is an event specifying DNS information that could not be found for any Web site I can I try to access, just after the connection is interrupted.

The NIC chipset is Realtek PCIe GBE Family Controller and I have confirmed that it is the correct chipset for the motherboard (Asus M4A77TD PRO), and in fact, Windows Update installed a driver for this updated January 12, 2009. Details of the update is an update of the Realtek software since December 2009. Either way, I was still having the same intermittent problems before this update. He seems to have done no difference at all.

Anyone know why this is happening and how to fix it?  I have looked for answers to this and seen a few other people (even on the MSDN/Technet forums) affected by the same or almost the same problem, but with no clear resolution. Suggestions of disabling IPv6 on the LAN adapter and ensure there is no power 'dormant' management the network adapter have been tried but do not cure the problem. It doesn't seem to be a particular sequence of events likely to occur either. I got to go twice in 20 minutes when just randomly on the web without any other traffic and I also had it go once then not again go for 2 or 3 hours with the same type of use.

Can anyone tell me why this is happening and how to make it stop?

Hello

It is a known problem in window 7 Operating Sytem

Check if you are faced with the question in SafeMode with networking in the link given below
http://Windows.Microsoft.com/en-us/Windows7/what-is-safe-mode

Check if you are faced with the question in the clean boot in the link given below
http://support.Microsoft.com/kb/929135

check if you have problems with network cards in the link given below
http://Windows.Microsoft.com/en-us/Windows7/how-do-I-fix-network-adapter-problems

See you soon!

Nathan Bracken

Tags: Windows

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