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Sporadic loss of Internet Connection ...LONG!


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#1
dontcensorme

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ETA: I previously posted this in another forum, but I think it should have been here. The only reply I got was to contact my ISP, but they are just sending a new router and say if that doesn't work to call them back.


Hello Geeks :D

Can anybody give me an idea of what's happening with my PC? (apologies for length of post, I wasn't sure how to attach the results file).

We had no internet access last friday due to a techical problem that affected thousands of people in the north of england and parts of scotland, but my hubby's PC worked fine when the service came back on and mine worked for a few hours then went off again. It has been coming and going every since. When it loses connection I have to re-set or unplug the router and that will sometimes work, but not every time.

I bought a new ethernet cable, which has made no difference. The first time it happened I looked in Device Manager and the Network Adaptor said it was disabled and I clicked on "enable" and it worked, but it hasn't said that since, even when it loses connection.

I'm the only one who uses this PC. The router has one other PC connected to it that has been able to connect to the internet all the time. Both are ethernet cable connections, we don't have wireless at the moment. I don't know if it's the router or my PC that's at fault. I have noticed a lot of error messages this week in the Event Viewer (and even a BSOD twice), but don't understand any of them.

I had a look at someone else's thread and followed one of the suggestions on there and got this, none of which I understand - doh:

Windows IP Configuration

Host Name . . . . . . . . . . . . : Home-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetLink ™ Gigabit Ethernet
Physical Address. . . . . . . . . : A4-BA-DB-E2-B6-74
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::e55a:28e7:1971:a033%11(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.78(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 06 November 2010 12:00:52
Lease Expires . . . . . . . . . . : 07 November 2010 12:00:53
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 245676763
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-7F-AC-50-A4-BA-DB-E2-B6-74
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{4576D4B7-948E-4479-A524-4435DB832931}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 11:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fd:18e1:767:a06e:c791(Preferred)
Link-local IPv6 Address . . . . . : fe80::18e1:767:a06e:c791%13(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Pinging Home-PC [::1] with 32 bytes of data:
Reply from ::1: time<1ms
Reply from ::1: time<1ms
Reply from ::1: time<1ms
Reply from ::1: time<1ms

Ping statistics for ::1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

Pinging google.com [173.194.37.104] with 32 bytes of data:
Reply from 173.194.37.104: bytes=32 time=55ms TTL=55
Reply from 173.194.37.104: bytes=32 time=53ms TTL=55
Reply from 173.194.37.104: bytes=32 time=57ms TTL=55
Reply from 173.194.37.104: bytes=32 time=55ms TTL=55

Ping statistics for 173.194.37.104:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 53ms, Maximum = 57ms, Average = 55ms

Pinging 209.85.171.100 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 209.85.171.100:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

Image Name PID Services
========================= ======== ============================================
System Idle Process 0 N/A
System 4 N/A
smss.exe 296 N/A
csrss.exe 540 N/A
wininit.exe 600 N/A
csrss.exe 620 N/A
services.exe 664 N/A
lsass.exe 684 KeyIso, SamSs
lsm.exe 692 N/A
svchost.exe 796 DcomLaunch, PlugPlay, Power
winlogon.exe 848 N/A
nvvsvc.exe 904 nvsvc
svchost.exe 936 RpcEptMapper, RpcSs
svchost.exe 128 AudioSrv, Dhcp, eventlog,
HomeGroupProvider, lmhosts, wscsvc
svchost.exe 316 AudioEndpointBuilder, HomeGroupListener,
Netman, PcaSvc, SysMain, TrkWks, UxSms,
WdiSystemHost, WPDBusEnum, wudfsvc
svchost.exe 560 AeLookupSvc, Appinfo, BITS, Browser, gpsvc,
IKEEXT, iphlpsvc, LanmanServer, MMCSS,
ProfSvc, Schedule, SENS, ShellHWDetection,
Themes, Winmgmt, wuauserv
svchost.exe 1052 EventSystem, fdPHost, netprofm, nsi,
WdiServiceHost
DockLogin.exe 1112 DockLoginService
nvvsvc.exe 1128 N/A
svchost.exe 1200 CryptSvc, Dnscache, LanmanWorkstation,
NlaSvc
spoolsv.exe 1312 Spooler
svchost.exe 1364 BFE, DPS, MpsSvc
taskhost.exe 1432 N/A
dwm.exe 1528 N/A
explorer.exe 1584 N/A
mfevtps.exe 1692 mfevtp
SeaPort.exe 1748 SeaPort
SftService.exe 1820 SftService
svchost.exe 1876 stisvc
mcshield.exe 1916 McShield
mfefire.exe 1996 mfefire
McSvHost.exe 512 McMPFSvc, mcmscsvc, McNaiAnn, McNASvc,
McProxy
svchost.exe 2568 PolicyAgent
WUDFHost.exe 2644 N/A
STService.exe 2948 N/A
DSUpd.exe 2864 N/A
conhost.exe 1380 N/A
Toaster.exe 3232 N/A
RAVCpl64.exe 3452 N/A
DataSafeOnline.exe 3552 N/A
SSScheduler.exe 3580 N/A
DellDock.exe 3592 N/A
PDVDDXSrv.exe 3660 N/A
RoxioBurnLauncher.exe 3708 N/A
mcagent.exe 3716 N/A
sprtcmd.exe 3724 N/A
svchost.exe 3832 FDResPub, SSDPSRV, upnphost
SearchIndexer.exe 4092 WSearch
sprtsvc.exe 1072 sprtsvc_DellSupportCenter
wmpnetwk.exe 2580 WMPNetworkSvc
svchost.exe 4340 p2pimsvc, p2psvc, PNRPsvc
svchost.exe 4596 SDRSVC
mcuicnt.exe 4608 N/A
McCHSvc.exe 4444 McComponentHostService
firefox.exe 2288 N/A
plugin-container.exe 4628 N/A
wlmail.exe 5108 N/A
wlcomm.exe 2744 N/A
audiodg.exe 1288 N/A
cmd.exe 3468 N/A
conhost.exe 4512 N/A
tasklist.exe 4956 N/A
WmiPrvSE.exe 4120 N/A

END OF RESULTS

Does that show anything that might point to the cause of the problem? Is there an easy way to tell if it's the network adaptor or the router, or something else?

I just about know how to operate my PC, have no techy skills at all.

Is there a way to check if it's the router or the PC? This PC is about 6 months old and I haven't had any problems with it up until now. Windows 7 Home premium if that's relevant.

Thanks for reading, sorry for length!
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#2
dontcensorme

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OK, so I have been googling like mad and searching on here for anyone with a similar problem and also trying various things that didn't work. I copied what someone else had been told to do with their connection (although theirs was wireless) and so far today I haven't had any disconnections (touch wood).

I got into the Network settings via the Control Panel and unchecked "Auto-configure" and instead typed in the IP and DNS addresses that I got when I did ipconfig /all when the connection was working*. I did get an error message when I'd finished and asked it to verify settings but Windows also said that it would fix the problem now. I don't know if I've done the right thing or not, but the connection seems OK. However, in Event Viewer instead of messages about my computer not being assigned an IP address, I'm now getting this:

"Router Advertisement settings have been changed on the network adapter 11. The current M - Managed Address Configuration flag is true and the O - Other Stateful Configuration flag is true. User Action: If you are seeing this event frequently, then it could be due to frequent change in M and O flag settings on the router in the network. Please contact your network administrator to have it resolved."

This comes in the "Information" type of message, rather than the "Error" or "Warning" sections that I was getting before.

*Btw, I did notice today that the "Auto-configure" that I unchecked has gone back to being checked and the IP addresses that I put in have disappeared, but the next section with DNS address has kept what I put in.
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#3
dontcensorme

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Spoke too soon :D. Connection lost again tonight. There was only one warning in the Event Viewer for that time and it said:

"Name resolution for the name stopbadware.org timed out after none of the configured DNS servers responded."

At the time it happened I was waking up the PC from sleep and hadn't used the internet connection or PC at all for about an hour. Also have never heard of or used the site it's referring to.
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#4
dontcensorme

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Hope I'm not breaking any rules by having this monologue, but I was hoping that I might discover something that would help somebody else with the same problem.

Anyhoo, my ISP sent the promised new router today and so far it hasn't disconnected yet. Hopefully that was the problem....
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#5
dontcensorme

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OK, so the router wasn't the problem. Connection failed again last night and as usual I can't get it back until I turn off the router and turn it back on again. I could really use some assistance with this. Will phone my ISP again, but the fact is that I have a hard time understanding them (and vice versa).

Here is my latest ipconfig /all: (when connected)

Microsoft Windows [Version 6.1.7600]
Copyright © 2009 Microsoft Corporation. All rights reserved.

C:\Windows\system32>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Home-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetLink ™ Gigabit Ethernet
Physical Address. . . . . . . . . : A4-BA-DB-E2-B6-74
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::e55a:28e7:1971:a033%11(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.79(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 13 November 2010 10:39:46
Lease Expires . . . . . . . . . . : 14 November 2010 10:39:46
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 245676763
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-7F-AC-50-A4-BA-DB-E2-B6-74

DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{4576D4B7-948E-4479-A524-4435DB832931}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 11:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fd:2837:1092:a06e:c4ef(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::2837:1092:a06e:c4ef%13(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Windows\system32>

END

Also, I noticed last night that when I lose connection there is always an entry in the Event Viewer, they're all very similar to this one:

Microsoft-Windows-Dhcp-Client/Admin
Source: Microsoft-Windows-Dhcp-Client
Date: 07/11/2010 20:18:58
Event ID: 1001
Task Category: Address Configuration State Event
Level: Error
Keywords:
User: LOCAL SERVICE
Computer: Home-PC
Description:
Your computer was not assigned an address from the network (by the DHCP Server) for the Network Card with network address 0xA4BADBE2B674. The following error occurred: 0x79. Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.
Event Xml:
<Event xmlns="http://schemas.micro.../events/event">
<System>
<Provider Name="Microsoft-Windows-Dhcp-Client" Guid="{15A7A4F8-0072-4EAB-ABAD-F98A4D666AED}" />
<EventID>1001</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>3</Task>
<Opcode>75</Opcode>
<Keywords>0x4000000000000000</Keywords>
<TimeCreated SystemTime="2010-11-07T20:18:58.226527600Z" />
<EventRecordID>21</EventRecordID>
<Correlation />
<Execution ProcessID="192" ThreadID="4540" />
<Channel>Microsoft-Windows-Dhcp-Client/Admin</Channel>
<Computer>Home-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="HWLength">6</Data>
<Data Name="HWAddress">A4BADBE2B674</Data>
<Data Name="StatusCode">121</Data>
</EventData>
</Event>

END

Any thoughts? Anybody? :D
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#6
admin

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Well the error message is just because your Network Interface Card isn't IP6 compatible. While it's harmless, you can stop it. Network and Sharing Center -> Change adapter settings -> Right mouse click on network adapter -> Properties -> Uncheck 'Internet Protocol Version 6 (TCP/IPv6)' -> Press OK.

Have you checked to see if there's a driver update available for your network adapter? What does your ISP say? Sounds to me like it's a problem on their end.
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#7
dontcensorme

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Thank you! ;)

I downloaded the latest driver but when I tried to change it, Windows said I already had the most current. This PC is only 6 months old.

ISP didn't say much. They sent me a new router but the problem remains. I tried to phone them again today but was waiting for a reply for 20 mins and had to go and do some work. I will try again, but tbh I've tried to avoid them as their support is pretty terrible (hubby is account holder and his connection is OK so he doesn't feel the need to change ISP :D I will have to call them again. (I emailed them today asking if they could troubleshoot via email but no reply as yet).

It hasn't disconnected yet today, usually happens after the internet has been connected for between 7 -10 hours.

I've done what you suggested re the IP6 thing.

Thanks again ;)

Edited by dontcensorme, 13 November 2010 - 10:57 AM.

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#8
dontcensorme

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OK, so I did what you suggested and also i did this that I found somewhere else:

netsh winsock reset catalog

netsh int ip reset reset.log hit

Had it on all day yesterday and not one disconnection and no new error messages. *touch wood*

Hope it wasn't a dumb thing to do, but I've done it now anyway.
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