Unpredictable partial internet crashes for (seemingly) no reason [Moved from XP]

[csskkai]

Hi, this problem has confused me and everyones who's tried to help me solve it.
My computer's internet randomly turns off every 30 to 60 minutes, and comes back after about an hour. The thing is, there is nothing wrong with my internet connection however. And every other computer in the house that is on the same network has internet that works just fine. Also, when the internet goes out, it only goes out partially. No websites load and pages like "Server cannot be found" on Mozilla or "Cannot load" on ie come up. No site will load. However, if I had a movie or video streaming BEFORE the internet mysteriously goes out, it KEEPS streaming and continues to load after the internet has gone out and other pages don't load. Also, chat's like Aol Instant Messenger also continues to work while the internet is down, as long as it was already on when internet crashed. If not, it does not connect.
I've also found that certain sites make the internet go out, like facebook. About 10 seconds after navigating to the page, internet goes out.

At first I just waited the hour until internet came back, but it got very annoying and it has become a real problem. No one seems to know whats wrong, so I'm hoping someone here can help me!

[justpassingby]

Hi csskkai and welcome to TSF !

If active connections don't fail but you can't surf websites anymore the problem could be with the DNS server. I'll move your thread to the networking support section.

When you get "disconnected" go to start => run and type
ping google.com
then
ping 72.14.207.99
If the first commands fails but the second succeeds then the issue is with the DNS.

Contact your ISP to know what DNS servers they use and set their addresses manually in your network properties : start => run => ncpa.cpl. Right-click your network connection => properties. Select TCP/IP internet protocol and click properties to set the DNS servers manually.

[johnwill]

Since it's only one computer that has the issue, I can't see this being an ISP issue.

When the Internet "goes out", please do this.


Try these simple tests.

Hold the Windows key and press R, then type CMD (COMMAND for W98/WME) to open a command prompt:

In the command prompt window that opens, type type the following commands one at a time, followed by the Enter key:

IPCONFIG

PING <computer_IP_address>

PING <default_gateway_address>

PING 206.190.60.37

PING yahoo.com

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

<computer_IP_address> - The IP Address of your computer, obtained from the IPCONFIG command above.

<default_gateway_address> - The IP address of the Default Gateway, obtained from the IPCONFIG command above.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.



Another thing we can try.

Let's try replacing your DNS server. Follow the instructions at OpenDNS for Windows and configure to use OpenDNS for your DNS server. See if that makes a difference.

[csskkai]

Here are the pasted results:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Michal Kai>IPCONFIG

Windows IP Configuration


Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 192.168.1.100
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1

C:\Documents and Settings\Michal Kai>ping 192.168.1.100

Pinging 192.168.1.100 with 32 bytes of data:

Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.

Ping statistics for 192.168.1.100:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Documents and Settings\Michal Kai>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:

Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.

Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Documents and Settings\Michal Kai>ping 206.190.60.37

Pinging 206.190.60.37 with 32 bytes of data:

Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.

Ping statistics for 206.190.60.37:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Documents and Settings\Michal Kai>ping yahoo.com
Ping request could not find host yahoo.com. Please check the name and try again.


C:\Documents and Settings\Michal Kai>

[johnwill]

Let's see a full IPCONFIG?


Hold the Windows key and press R, then type CMD to open a command prompt:

In the command prompt window that opens, type type the following command:

Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[csskkai]

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Michal Kai>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : DBPR8Z81
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connecti
on
Physical Address. . . . . . . . . : 00-13-20-B2-B4-41
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.100
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 208.67.222.222
208.67.220.220
Lease Obtained. . . . . . . . . . : Monday, September 08, 2008 6:05:17 P
M
Lease Expires . . . . . . . . . . : Tuesday, September 09, 2008 6:05:17
PM

C:\Documents and Settings\Michal Kai>

[johnwill]

This looks like a firewall issue, but first let's try this stack reset, then run the ping test I posted previously after the reboot.


TCP/IP stack repair options for use with Windows XP with SP2/SP3.

Start, Run, CMD to open a command prompt:

In the command prompt window that opens, type type the following commands:

Note: Type only the text in bold for the following commands.

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

Reset WINSOCK entries to installation defaults, type: netsh winsock reset catalog

Reboot the machine.