Hey good folks at DaniWeb !!!!!!!
I have a Dell Dimension 3100, Windows XP home, SP3
The computer had many trogans and viruses on it and have been cleaned off. Now I can NOT get this computer to recieve internet packets for anything ! It says that my " Local Area Connection" speed is 10 mbps. But that I have "Limited or no connectivity". I have tried Winsockfix.exe, and that didn't help. Local Area Connection is enabled. I've tried hooking the Ethernet cable straight into the computer and I've tried running it into a small hub, where another computer is hooked up and running on the internet just fine. I've tried ipconfig /flushdns, ipconfig /renew & release. I have hit the " REPAIR" button many times. I have tried unplugging the power to the hub for 30 seconds and plugging it back in. I even put a Linksys Network Ethernet card in it and tried using that . All I got was the same results.
Any help out there ? All help is very much appreciated !!!!!

Lets have a look and see if there's anything lurking in your registry that shouldn't be!

Download a copy of HiJackThis and save it to a folder on your desktop.

Do a scan and save a logfile.

Post your logfile here......Download HJT latest version here:

http://www.geekpolice.net/freeware-d...ght=hijackthis

Regards

Thanks for your reply !!!!!!! Here is a log file from today....
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 10:00:52, on 7/27/2008
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16674)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe
C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\Corel\Corel Photo Album 6\MediaDetect.exe
C:\Program Files\Adobe\Photoshop Album Starter Edition\3.2\Apps\apdproxy.exe
C:\Program Files\Dell Support Center\bin\sprtcmd.exe
C:\PROGRA~1\AVG\AVG8\avgtray.exe
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\Program Files\DellSupport\DSAgnt.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\HP\Digital Imaging\bin\hpqgalry.exe
C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
C:\WINDOWS\system32\svchost.exe
C:\PROGRA~1\AVG\AVG8\avgrsx.exe
C:\PROGRA~1\AVG\AVG8\avgemc.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R3 - Default URLSearchHook is missing
O2 - BHO: AVG Safe Search - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG8\avgssie.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [ISUSPM Startup] "C:\Program Files\Common Files\InstallShield\UpdateService\isuspm.exe" -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [Corel Photo Downloader] C:\Program Files\Corel\Corel Photo Album 6\MediaDetect.exe
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Program Files\Adobe\Photoshop Album Starter Edition\3.2\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [dscactivate] "C:\Program Files\Dell Support Center\gs_agent\custom\dsca.exe"
O4 - HKLM\..\Run: [DellSupportCenter] "C:\Program Files\Dell Support Center\bin\sprtcmd.exe" /P DellSupportCenter
O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKLM\..\Run: [ZoneAlarm Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [DellSupport] "C:\Program Files\DellSupport\DSAgnt.exe" /startup
O4 - HKCU\..\Run: [DellSupportCenter] "C:\Program Files\Dell Support Center\bin\sprtcmd.exe" /P DellSupportCenter
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-18\..\RunOnce: [RunNarrator] Narrator.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\RunOnce: [RunNarrator] Narrator.exe (User 'Default user')
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: HP Image Zone Fast Start.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqthb08.exe
O4 - Global Startup: QuickBooks Update Agent.lnk = C:\Program Files\Common Files\Intuit\QuickBooks\QBUpdate\qbupdate.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\system32\Shdocvw.dll
O9 - Extra button: Run IMVU - {d9288080-1baa-4bc4-9cf8-a92d743db949} - C:\Documents and Settings\Brenna Jones\Start Menu\Programs\IMVU\Run IMVU.lnk (file missing)
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra button: CarbonPoker - {e4e8c758-34b4-44bb-8ef9-1f0786e81d2d} - C:\Documents and Settings\Brenna Jones\Start Menu\Programs\CarbonPoker\CarbonPoker.lnk (HKCU)
O10 - Unknown file in Winsock LSP: c:\windows\system32\nwprovau.dll
O15 - Trusted IP range: http://195.95.*.*
O15 - Trusted IP range: http://195.225.*.*
O15 - Trusted IP range: http://216.236.239.193
O15 - Trusted IP range: http://216.236.239.195
O15 - Trusted IP range: http://216.236.239.193
O15 - Trusted IP range: http://216.236.239.195
O15 - Trusted IP range: http://216.236.239.193
O15 - Trusted IP range: http://216.236.239.195
O15 - Trusted IP range: http://216.236.239.193
O15 - Trusted IP range: http://216.236.239.195
O15 - Trusted IP range: http://216.236.239.193
O15 - Trusted IP range: http://216.236.239.195
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/micr...?1188231397718
O16 - DPF: {D0C0F75C-683A-4390-A791-1ACFD5599AB8} (Oberon Flash Game Host) - http://games.myspace.com/Gameshell/G...onGameHost.cab
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG8\avgpp.dll
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~1\GOEC62~1.DLL,avgrsstx.dll
O20 - Winlogon Notify: !SASWinLogon - C:\Program Files\SUPERAntiSpyware\SASWINLO.dll
O23 - Service: AVG8 E-mail Scanner (avg8emc) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgemc.exe
O23 - Service: AVG8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: DSBrokerService - Unknown owner - C:\Program Files\DellSupport\brkrsvc.exe
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe

--
End of file - 7105 bytes
Just let me know what to do next.

Please run HijackThis again and click "Scan".

Place checks next to the following entries in the code below and close all browser and other windows except for HijackThis, and click "Fix Checked".


On completion close HJT and reboot!

Looks as though the pre-existing Malware variants have added some IP ranges to your trusted pages. (Unless you put them there yourself?)

When it says that " Local Area Connection" speed is 10 mbps, this is refering to your network adaptor and has nothing to do with your internet speed contracted with your ISP.

Can you access the WAN (Internet) now?

I haven't paut any addresses in this computer. Must have been a bad guy !
Did you want a new HijackThis log ?
I still can't get on the internet. Limited or no connectivity.
Next ? I'm really tryin to get this computer fixed by tomorrow morning so it can be used when the store opens in the morning.
Would this computer having 3 user accounts have anything to do with it ?
Help !

You can send a new log if you like and as long as your logged in as Admin, nothing else should matter.

I just saw something in your logs that i missed before.....your running AVG8 which is famous for its firewall blocking internet access.

Disable all AVG services (including firewall) from running in the background and see if this helps.

I tried to disable AVG 8 but taskmanager wouldn't do it, so, I uninstalled it. Restarted and turned ZoneAlarm off. None of that helped. I have installed AVG7.5 for now untill we get this thing fixed.
Let me know what ya want me to do, please.
new log

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 12:32:23, on 7/27/2008
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16674)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe
C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\Corel\Corel Photo Album 6\MediaDetect.exe
C:\Program Files\Adobe\Photoshop Album Starter Edition\3.2\Apps\apdproxy.exe
C:\Program Files\Dell Support Center\bin\sprtcmd.exe
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\Program Files\DellSupport\DSAgnt.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\HP\Digital Imaging\bin\hpqgalry.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\wscntfy.exe
C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgemc.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\Program Files\Grisoft\AVG7\avgcc.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R3 - Default URLSearchHook is missing
O2 - BHO: AVG Safe Search - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG8\avgssie.dll (file missing)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [ISUSPM Startup] "C:\Program Files\Common Files\InstallShield\UpdateService\isuspm.exe" -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [Corel Photo Downloader] C:\Program Files\Corel\Corel Photo Album 6\MediaDetect.exe
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Program Files\Adobe\Photoshop Album Starter Edition\3.2\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [dscactivate] "C:\Program Files\Dell Support Center\gs_agent\custom\dsca.exe"
O4 - HKLM\..\Run: [DellSupportCenter] "C:\Program Files\Dell Support Center\bin\sprtcmd.exe" /P DellSupportCenter
O4 - HKLM\..\Run: [ZoneAlarm Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVG7\avgcc.exe /STARTUP
O4 - HKCU\..\Run: [DellSupport] "C:\Program Files\DellSupport\DSAgnt.exe" /startup
O4 - HKCU\..\Run: [DellSupportCenter] "C:\Program Files\Dell Support Center\bin\sprtcmd.exe" /P DellSupportCenter
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-19\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-18\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [RunNarrator] Narrator.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [RunNarrator] Narrator.exe (User 'Default user')
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: HP Image Zone Fast Start.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqthb08.exe
O4 - Global Startup: QuickBooks Update Agent.lnk = C:\Program Files\Common Files\Intuit\QuickBooks\QBUpdate\qbupdate.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\system32\Shdocvw.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: CarbonPoker - {e4e8c758-34b4-44bb-8ef9-1f0786e81d2d} - C:\Documents and Settings\Brenna Jones\Start Menu\Programs\CarbonPoker\CarbonPoker.lnk (HKCU)
O10 - Unknown file in Winsock LSP: c:\windows\system32\nwprovau.dll
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/micr...?1188231397718
O16 - DPF: {D0C0F75C-683A-4390-A791-1ACFD5599AB8} (Oberon Flash Game Host) - http://games.myspace.com/Gameshell/G...onGameHost.cab
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~1\GOEC62~1.DLL
O20 - Winlogon Notify: !SASWinLogon - C:\Program Files\SUPERAntiSpyware\SASWINLO.dll
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: AVG E-mail Scanner (AVGEMS) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgemc.exe
O23 - Service: DSBrokerService - Unknown owner - C:\Program Files\DellSupport\brkrsvc.exe
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe

--
End of file - 6445 bytes

Your logfile is clean and there's nothing untoward in there that should be stopping us.

Just an old remenant of the AVG8 uninstall that you can have HJT take out if you like


This isnt affecting the current concerns though.

Dang this.....We must be missing something easy.
AVG7.5pro also has its own firewall built in, are you sure you have disabled it and ZA before attempting connection?

Personally, i would ditch AVG and use Avast Free edition available here:
http://www.majorgeeks.com/Avast_Home_Edition_d1968.html

I guess were not that concerned about an AV just yet as we cant even access the internet to get infected....lol

I think youve tried everything that comes to mind at the moment.....I gotta go to bed but ill think some more on this.

Try uninstalling AVG and ZA without installing anything else, Run CCleaner after the uninstalls and then attempt connection again.
http://www.majorgeeks.com/CCleaner_W...bar_d5125.html
Dont install the crappy Yahoo toolbar though (unless you want it)

I assume your bypassing all routers etc and connecting the cat5e directly to your pute from modem(ie using the same physical setup connection that works on another system)

Uninstalled AVG & Zone. Ran CCleaner.....no Yahoo crap for me !!! I have been running the Cat5 straight in to computer and also tried my little simple hub that I have. I also now have tried to go into Safe Mode w/networking and connect that way. Didn't help at all !
I also did RUN, cmd and then ipconfig /renew and got the results that said " No operation can be performed on Local Area Connection 3 while it has it's media disconnected." Then I tried ipconfig /release and got these results under Local Area Connection 3: Media State.........: Media disconeccted
I'm lost.
I restarted, and that didn't help. Hit repair, that didn't help. I unplugged the Cat5 and plugged it right into another computer( computer #2), sitting beside this other computer and computer #2 got onto the internet within 6 seconds. So I know it's not the Cat5 cable.
HELP , please. When I went into Safemode I went into the Admin. account. When in normal mode, the 3 accounts that are listed are ALL labled as Administrator accounts. I'm lost .
Any more help ?

You say you have tried Winsockfix so that covers that area.

Also say you have run ipconfig/release.....what showed up?
Did it show the usual IP assigned to the ethernet.
Is the ethernet DHCP'd and when you run ipconfig/release with the ethernet cable unplugged does it behave proper on unplug? (ie. IP goes to 0.0.0.0.)

Have you also tried deleting the Local Area Connection and renewing the network connection....

Please also run through these TCP/IP stack repair options for XP with SP2.

Open a cmmd prompt with admin priv's again

Reset WINSOCK entries to installation defaults by running: netsh winsock reset catalog

Reset TCP/IP stack to installation defaults: netsh int ip reset reset.log

Reboot the machine.