No network & Internet connection
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Thread: No network & Internet connection

  1. #1
    Join Date
    Aug 2003
    Location
    burnaby
    Posts
    976

    No network & Internet connection

    Please help me that I have a Win XP Pro computer suddenly cannot connect to the Internet or view other computers in the workgroup.
    It is connected to the router by cable, has IP address, can ping the router and other computers, but cannot access to the Internet or see other computers in My Network Places. Other computers (Win 7) can ping it but can't see it in the Network but can go to other computers and access to the Internet.
    If I boot the problem computer in Safe Mode, there is no problem.
    I have refreshed IP, remove and then re-install TCP/IP protocol in network property, re-run Network connection wizard, all tries failed. I can see the Status of network connection and it sent some packets and received 2 or 3 then stop receiving. No hardware and software installation was done between last successful connection and the failed one.

    Thanks for your advice.

  2. #2
    Join Date
    Feb 2000
    Location
    Idaho Falls, Idaho, USA
    Posts
    18,063
    If all is well in Safe Mode, then someting that is running in Normal Mode is the cause. Check the results of an "ipconfig /all" command is Safe Mode and Normal Mode for any differences. Maybe scan for malware also.

  3. #3
    Join Date
    Aug 2003
    Location
    burnaby
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    Thanks, jdc2000. I'll post back the outcome tomorrow.

  4. #4
    Join Date
    Aug 2003
    Location
    burnaby
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    Still not working

    The parameters giving by ipconfig /all in Normal and Safe modes are the same.

    Hose Name: Computer3
    DNS suffix search list: gateway.2wire.net
    DHCP enabled: YES
    Auto config: YES
    IP address: 192.168.1.101
    Subnet: 255.255.255.0
    Default gateway: 192.168.1.254
    DHCP servers: 192.168.1.254
    DNS servers: 192.168.1.254
    Lease Obtained: Aug 27, 2012, 10:28:12am
    Lease Expired: Aug 28, 2012, 10:28:12am

    I have ping the problem computer from my laptop, no response. ping to the router is OK.
    But ping from the problem computer to both my laptop and router are OK.

    I just download and install the malwarebytes and doing the scanning. These tasks are done under safe mode. So far (35 min, 115000 objects scanned), no malware detected, but scanning is carrying on.

  5. #5
    Join Date
    Aug 2003
    Location
    burnaby
    Posts
    976
    More info on the anti-virus software on the problem computer:
    McAfee Security Center
    version 11.0.678, last updated 26-06-2012
    Virus Scan
    version 15.0.302, last updated 18-08-2012
    DAT
    version 6807, last updated 17-08-2012
    Boot DAT
    version 6802.000, last updated 13-08-2012
    Engine
    version 5400.1158
    Firewall
    version 12.0.360, last updated 19-7-2012
    Site Advisor
    version 3.4.1.195, last update 31-12-1969
    Anti spam
    version 12.0.292, last updated 20-08-2012

    Please note the date of the upate of the Site Advisor. Thanks.

  6. #6
    Join Date
    Aug 2003
    Location
    burnaby
    Posts
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    Malwarebytes full scanning is just done. No detection.

  7. #7
    Join Date
    Feb 2000
    Location
    Idaho Falls, Idaho, USA
    Posts
    18,063
    What happens if you disable McAfee in Normal Mode?

    Link:

    https://community.mcafee.com/thread/13787

  8. #8
    Join Date
    Aug 2003
    Location
    burnaby
    Posts
    976
    Thanks jdc2000.

    It's found that McAfee's recent update causes the problem which is now resolved.
    http://service.mcafee.com/faq/TS101446.htm

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