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Internet selectively disconnecting in Vista after 10-15 minutes.

Posted on 2008-06-16
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Last Modified: 2013-11-30
In essence I am trying to solve an internet connection issue with my Vista 32-bit Asus laptop.  I have seen this problem happening to many people and have come across many solutions.  I am running an Asus F3K Laptop and using an ethernet connection to connect to the internet at my home.  I have tested the router and it supposedly is compatible with Vista.  The connection seems to drop out after about 15 minutes although occasionally it will last a couple of hours.  The XP computer I own never loses its connection. .   Here is a rundown of what happens:

Power saving is turned off with all internet related functions.  When I startup my computer the internet connection recognizes correctly and I am able to access the internet and go to any sites without a single problem.  After a period of time my browsers will stop being able to talk to new sites.  The weird part is that if a connection is open and communicating then it will continue to do so after this happens and the LAN connection will show that it is still "connected" to the internet.  It does not matter what the open connection is; bit torrent, youtube, netflix streaming or anything that continues a connection for sometime will continue to buffer and run after this happens.  After it is done buffering, no new communications can occur (such as youtube finding videos to suggest for subsequent viewing).  After researching this extensively on the internet (in 15 minute spurts *cry*) I have adjusted many of my Ethernet connection settings turning off IPv6, QOS, etc. as advised by people to fix the problem.  I have tried this: http://www.experts-exchange.com/Networking/Protocols/DNS/Q_23211123.html
and had no luck.

 I have also tried this fix:
http://www.catonett.com/blog/archives/194

and finally I have tried the windows hotfix for the similar problem to this and it does not work.

I should add:


The problems started a couple of weeks after SP1
I am using fully updated version of vista
Network drivers have been updated (using vista, however)
It has happened hundreds of times on the ethernet connection and a few times (although I rarely use wireless) on wireless connections.
The only sure way to get the connection functioning again is to restart the computer.

Here is my Ipconfig log:

Windows IP Configuration

   Host Name . . . . . . . . . . . . : Justin-PC
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : hsd1.co.comcast.net.

Wireless LAN adapter Wireless Network Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Atheros AR5007EG Wireless Network Adapter
   Physical Address. . . . . . . . . : 00-15-AF-4F-2C-C7
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : hsd1.co.comcast.net.
   Description . . . . . . . . . . . : Realtek RTL8168B/8111B Family PCI-E Gigabit Ethernet NIC (NDIS 6.0)
   Physical Address. . . . . . . . . : 00-1D-60-C2-10-85
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 24.8.342.313(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.342.0
   Lease Obtained. . . . . . . . . . : Sunday, June 15, 2008 9:58:34 PM
   Lease Expires . . . . . . . . . . : Wednesday, June 18, 2008 10:17:48 PM
   Default Gateway . . . . . . . . . : 24.8.152.1
   DHCP Server . . . . . . . . . . . : 68.87.66.13
   DNS Servers . . . . . . . . . . . : 68.87.85.98
                                       68.87.69.146
   NetBIOS over Tcpip. . . . . . . . : Enabled

Thank you!

Let me know if you need more information!
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Question by:Occidentalismo
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Expert Comment

by:CorruptedLogic
ID: 21798275
This may seem obvious, but, have you tried taking your laptop to another network (coffee shop, friends house, where ever) and trying to surf there? If you still get the same issues, you can confidently say that it is not your router / internet connection.  If the problems disappear, it's time to start looking at your networking hardware and maybe having Comcast come out and check that the signal strength of your incoming cable connection is within tolerance.
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Expert Comment

by:CorruptedLogic
ID: 21798281
Similarly, could you have someone else bring a laptop to your connection and try it...that would essentially prove the same thing.
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Author Comment

by:Occidentalismo
ID: 21798579
I have tried it at other locations and have had it disconnect a couple of times in the same fashion.  The cable works with xp system but not the vista system.
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Accepted Solution

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Occidentalismo earned 0 total points
ID: 21842203
I uninstalled Zone Alarm firewall and it appears to have fixed the issue.
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Expert Comment

by:Ryan Bayne
ID: 23656018
I get the same problem its dam annoying when your a webdesigner. I'll uninstall my antivirus and see what happens aswel but I'm using AVG.

My machine with XP doesnt seem to have problems so it rules out router, modem and ISP. I bloody think its just Vista!
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