Windows 7 network Slows down Packets are Lost

Posted on 2009-12-20
Last Modified: 2012-05-08

1-No router, directly plugged into the cable modem
Two identical HP tablet 2730p tablet laptops one with Windows 7 and the other with Windows XP. The one with Windows 7 will begin to have intermittent connection after xx minutes. If I do a restart, I can ping sites with no packet loss and surf the web with no issues. But after 10-15 minutes, internet pages will error with page cannot be displayed and I will get 50-75% packet loss on pings. I have to keep refreshing to page over-over for it to pull in. If I disconnect the cable from the PC for xx minutes and reconnect all the speed comes back until xx-minutes and I am in the same boat.

If I do the same with the WInXP laptop no issues no packet loss. Surf the web does not present an issue at all

The Windows 7 network slow down happens on wireless as well but to eliminate devices I am doing this directly from my cable modem. No forget the wireless for now.

Wi-Fi is off on both units

2-Verizon AirCard
Test by not using the PC's network devices

Job provides me a cellular card. Again when I insert the card in the WInXP machine no issues at all. When I place the card in the Win7 machine I get great connection at first with no packet loss, but after xx minutes I began to see packet loss on this card and surf the web with began showing page cannot be displayed

Need Help
This is driving me crazy...what is it about Win7 and it's network. When do a ipconfig /all the ip address list some:

IPv4 address:

ipconfig /release all does not seem to break the IP lease that is set to expire on 12/24/09 and looks nothing like XP how it list the address. The IP is different from machine to machine meaning if I take the cable out the XP machine over to the Win7 identical machine.

I have unplugged the router on each machine reboot and keep getting this crazy issue. Help

Question by:parcou
    LVL 53

    Expert Comment

    by:Will Szymkowski
    Have you tried uninstalling your NIC and getting the latest drivers for it and then reinstall? Have you checked in the event viewer to see if there are any errors populating that may point to a network issue?

    Also, for performace testing have you tried to lower your MTU and then see if you are getting the same issues with packet loss. Also, have you tried a tracert to see what path your computer is taking? A possible routing issue with your ISP?
    LVL 12

    Expert Comment

    by:John Griffith
    Does the Windows 7 have an Internet Security package installed - NIS, N360, KIS, Mcafee, etc... with a personal firewall?
    Also - try the Windows 7 system in SAFEMODE w/ Networking
    Also - run IE8 on the WIndows 7 system at an elevated level and see if any different (RIGHT-click on IE8 icon, select "Run as Administrator"
    Regards. . .

    Author Comment


    I did remove all the drivers and rebooted and still have this haunting issues... Not certain how to change the MTU in the comcast modem but there is an option for this if I add the router back...

    All I run is Webroot Spysweeper Anti/Spy sweeper. I will try the safe mode now and report back

    I saw somewhere someone stated to disable the iPv6 and a few other you all agree with this???
    LVL 4

    Expert Comment

    This might be stating the obvious but have you scanned for virus's.


    disable all virus protection and firewalls first. If you haven't use combofix you may want to read the website first. Post you logs here so someone can take a look at them.
    LVL 4

    Expert Comment

    You can disable IPv6, have you tried a static IP? Depending on the router you should be able to setup a static IP outside the DHCP range. Try .151 or higher.

    Accepted Solution

    ISP issue in area unknown to the business clients...they finally fixed after 4-days of pain

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    How to run any project with ease

    Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
    - Combine task lists, docs, spreadsheets, and chat in one
    - View and edit from mobile/offline
    - Cut down on emails

    Suggested Solutions

    Trying to figure out group policy inheritance and which settings apply where can be a chore.  Here's a very simple summary I've written which might help.  Keep in mind, this is just a high-level conceptual overview where I try to avoid getting bogge…
    PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
    This Micro Tutorial will give you basic overview of the control panel section on Windows 7. It will depth in Network and Internet, Hardware and Sound, etc. This will be demonstrated using Windows 7 operating system.
    Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…

    760 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    12 Experts available now in Live!

    Get 1:1 Help Now