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Laptop randomly losses internet connection


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#1
monlov

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Hi,
Thank you for looking. I'll try and let you know everything I think that you will need. I have an HP pavilion dv2000 laptop running windows vista 32 bit, with a broadcom 802.11b/g wan and a Nvidia nforce network controller. I have verizon fios broadband, with verizon's ultraline series 3 modem and router. The computer seems to use the vista and an hp network assistant(maybe the issue?).

The problem that I am having is that the computer randomly, or seemingly randomly, losses the internet connection. It changes to a local only connection. The only way I can see to fix it is to restart the computer, as I tried to reset the router, reset the wireless card, disabling the TCP/ipv6, windows diagnostic, and just waiting it out . This started happening about once a month but is getting worse and now happens about every two days. It doesn't just happen on my home wireless router but it has also happened at my parents house, in laws house and at school. If after it loses the internet wirelessly and I connect to the router with a wire it still will not recognize the internet. I have been trying, unsuccessfully, to get help from HP but they are not understanding what is happening and are just blaming the ISP. But this doesn't explain the fact that I have another laptop and a desktop hooked t0 the same router and they are fine, along with the fact that it happens at other locations.

Thanks for your help and hopefully this makes sense. Let me know if you need any other information.

Matt

EDIT:
Just wanted to say that the other laptop and the desktop are running windows XP.

Edited by monlov, 12 June 2009 - 03:23 PM.

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#2
DragonMaster Jay

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In Vista, a firewall that is running may choke out the connection. Especially when you are further away from the router.

Do you have a third party firewall or are you using the Vista default firewall?
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#3
monlov

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Thanks for the response,

I have vista's default firewall on.
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#4
DragonMaster Jay

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Check exceptions on the firewall. Be sure the firewall notices you have a LAN or Wireless connection.

Do you know how to do this?
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#5
happyrock

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make sure you have DHCP enabled...

When a DHCP-configured client (a computer or any other network-aware device) connects to a network, the DHCP client sends a broadcast query requesting necessary information from a DHCP server. The DHCP server manages a pool of IP addresses and information about client configuration parameters such as default gateway, domain name, the DNS servers, other servers such as time servers, and so forth. On receiving a valid request, the server assigns the computer an IP address, a lease (length of time the allocation is valid), and other IP configuration parameters, such as the subnet mask and the default gateway. The query is typically initiated immediately after booting, and must complete before the client can initiate IP-based communication with other hosts.
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#6
monlov

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Dragonmaster jay,
I think so, On the advanced tab of the windows firewall settings broadband, LAN and wireless are checked. Is there anything in particular that I should look for on the exceptions tab.

happyrock,
How do I check to see if I have DHCP enabled?


edit: I searched around and I am pretty sure that I have DHCP enabled, having it obtain an IP and DNS automaticly.

Edited by monlov, 13 June 2009 - 05:38 PM.

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#7
Dan

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When you lose the connection, what happens if you release/renew your IP?

Step 1 - Attempt to release and renew your IP:
  • Select Start
  • In the Start Search field type cmd -- right-click on the cmd program and choose Run as administrator
  • In the new command prompt window, please type the following commands:
  • ipconfig /release
  • ipconfig /renew
*Note: If the above commands generate an error, please post the error.
If the issue is occurring at your parents house as well, then like you suggested, it's unlikely to be an issue with your ISP.

The next time you lose your connection, do a connectivity test and post the results.

Step 2 - Connectivity test:
  • Select Start
  • In the Start Search field type cmd -- right-click on the cmd program and choose Run as administrator
  • In the new command prompt window, please type the following commands (*Note: each ping will take approximately 10 seconds to complete; wait for the command prompt to return before you type the next one. Also, the single '>' and double '>>' are intentional; please type the commands exactly as they appear):
    • ipconfig /all > C:\results.txt
    • route print >> C:\results.txt
    • ping 127.0.0.1 >> C:\results.txt
    • ping google.com >> C:\results.txt
    • ping 209.85.171.100 >> C:\results.txt
  • Once the above commands have completed, navigate to your C: drive and open the text file results.txt -- please copy/paste the contents of this file into your next response.
Also, check your event log for any errors/warnings that may pop up around the time that you lose the connection.

Step 3 - Event Log/Viewer errors/warnings:
  • Select Start
  • In the Start Search field type eventvwr and press the ENTER key
  • In the new window, expand Windows Logs and then select System -- this will display a list of all system events. Look for any errors and/or warnings (denoted by a red 'x' or a yellow '!'). If you find any, please post the relevant heading, along with the details inside by double clicking on the error/warning, and then copy/pasting the information from within.
    *Note: You'll mainly be looking for DHCP and TCP/IP errors/warnings -- however any and all errors may be relevant.

Edited by Dan, 15 June 2009 - 04:20 AM.

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#8
monlov

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Thanks Dan. I will let you know when I lose it again.
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#9
monlov

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Releasing and renewing the IP didnt change anything. Here are the results you asked for.

From results.txt

Windows IP Configuration

Host Name . . . . . . . . . . . . : matt-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : home

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : NVIDIA nForce Networking Controller
Physical Address. . . . . . . . . : 00-1D-72-4B-CB-37
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : Broadcom 802.11b/g WLAN
Physical Address. . . . . . . . . : 00-1A-73-E6-03-FB
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.4(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, June 16, 2009 2:19:09 PM
Lease Expires . . . . . . . . . . : Wednesday, June 17, 2009 2:19:08 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 7:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e50:3062:218a:3f57:fefb(Preferred)
Link-local IPv6 Address . . . . . : fe80::3062:218a:3f57:fefb%10(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : isatap.home
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
===========================================================================
Interface List
9 ...00 1d 72 4b cb 37 ...... NVIDIA nForce Networking Controller
8 ...00 1a 73 e6 03 fb ...... Broadcom 802.11b/g WLAN
1 ........................... Software Loopback Interface 1
10 ...02 00 54 55 4e 01 ...... Teredo Tunneling Pseudo-Interface
12 ...00 00 00 00 00 00 00 e0 6TO4 Adapter
11 ...00 00 00 00 00 00 00 e0 isatap.home
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.4 25
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.4 281
192.168.1.4 255.255.255.255 On-link 192.168.1.4 281
192.168.1.255 255.255.255.255 On-link 192.168.1.4 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.1.4 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.1.4 281
===========================================================================
Persistent Routes:
None

IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
10 18 ::/0 On-link
1 306 ::1/128 On-link
10 18 2001::/32 On-link
10 266 2001:0:4137:9e50:3062:218a:3f57:fefb/128
On-link
10 266 fe80::/64 On-link
10 266 fe80::3062:218a:3f57:fefb/128
On-link
1 306 ff00::/8 On-link
10 266 ff00::/8 On-link
===========================================================================
Persistent Routes:
None


Pinging 127.0.0.1 with 32 bytes of data:


Reply from 127.0.0.1: bytes=32 time<1ms TTL=128

Reply from 127.0.0.1: bytes=32 time<1ms TTL=128

Reply from 127.0.0.1: bytes=32 time<1ms TTL=128

Reply from 127.0.0.1: bytes=32 time<1ms TTL=128



Ping statistics for 127.0.0.1:

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 [74.125.127.100] with 32 bytes of data:



Reply from 74.125.127.100: bytes=32 time=107ms TTL=251

Reply from 74.125.127.100: bytes=32 time=104ms TTL=251

Reply from 74.125.127.100: bytes=32 time=105ms TTL=251

Reply from 74.125.127.100: bytes=32 time=105ms TTL=251



Ping statistics for 74.125.127.100:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 104ms, Maximum = 107ms, Average = 105ms



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),

And the errors from the event log

All are sharedaccess_NAT

-2:12:46The DHCP allocator has disabled itself on IP address 192.168.1.4, since the IP address is outside the
192.168.0.0/255.255.255.0 scope from which addresses are being allocated to DHCP clients. To enable the DHCP
allocator on this IP address, change the scope to include the IP address, or change the IP address to fall within the scope.

-2:18:42The DHCP allocator has disabled itself on IP address 192.168.1.4, since the IP address is outside the 192.168.0.0/255.255.255.0 scope from which addresses are being allocated to DHCP clients. To enable the DHCP allocator on this IP address, change the scope to include the IP address, or change the IP address to fall within the scope.

-2:19:09The DNS proxy agent was unable to allocate 0 bytes of memory. This may indicate that the system is low on virtual memory, or that the memory manager has encountered an internal error.

-2:19:09The DHCP allocator has disabled itself on IP address 192.168.1.4, since the IP address is outside the 192.168.0.0/255.255.255.0 scope from which addresses are being allocated to DHCP clients. To enable the
DHCP allocator on this IP address, change the scope to include the IP address, or change the IP address to fall within the scope.


and in between the last two was a normal event that I though might be something?

user-pnp
Driver Management has concluded the process to add Service tunnel for Device Instance
ID ROOT\*ISATAP\0019 with the following status: 0


Thanks again Dan

Edited by monlov, 16 June 2009 - 12:53 PM.

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#10
diabillic

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2:18:42The DHCP allocator has disabled itself on IP address 192.168.1.4, since the IP address is outside the 192.168.0.0/255.255.255.0 scope from which addresses are being allocated to DHCP clients. To enable the DHCP allocator on this IP address, change the scope to include the IP address, or change the IP address to fall within the scope.

Apparently it thinks that your network isnt really "your" network. Trying deleting the connection profile from the Network and Sharing Center then reconnect the wifi.
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#11
monlov

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Trying deleting the connection profile from the Network and Sharing Center then reconnect the wifi.


Hey diabillic, thanks for responding.
I deleted the connection profile and then reconnected but it still wont connect to the internet. I looked in the event viewer I can see where it gave me an IP then connected and then it gave the same error as you quoted again. The network and sharing center "thinks" its connected to the internet and still has the globe in the network icon by the clock.
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#12
Dan

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Going back to your original post:

The computer seems to use the vista and an hp network assistant(maybe the issue?).

It sounds like either Vista (WLAN) or your network assistant is trying to connect to different networks and thus causing you to lose your connection. I would strongly recommend that you remove the HP network assistant and simply use Vista's WLAN functionality to handle your wifi connections. Ensure that your network is the preferred network, and that you do not have the option to connect to 'better connections' checked (I can't remember the exact name off the top of my head).

Let us know if the issue persists.
- Dan
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#13
diabillic

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Going back to your original post:

The computer seems to use the vista and an hp network assistant(maybe the issue?).

It sounds like either Vista (WLAN) or your network assistant is trying to connect to different networks and thus causing you to lose your connection. I would strongly recommend that you remove the HP network assistant and simply use Vista's WLAN functionality to handle your wifi connections. Ensure that your network is the preferred network, and that you do not have the option to connect to 'better connections' checked (I can't remember the exact name off the top of my head).

Let us know if the issue persists.
- Dan


Good call, I didnt even think of a 3rd party tool interfering.
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#14
monlov

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Thanks again everybody.
I deleted the hp network assistant deselected the connect to a more preferred network and restarted, so hopefully this will work. If it doesn't go down I will be back in two to three days to let you know that things look good (while simultaneously knocking on the wooden table).
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#15
monlov

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sorry I didn't get back earlier. The laptop is still having the same issues. It seems as though it happens more often when I am using youtube or other sites that use alot of bandwidth, but that could just be a coincidence.
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