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windows 7 - stopped accessing internet


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7 replies to this topic

#1 eastpa

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Posted 14 December 2010 - 10:13 PM

Several days ago my windows 7 desktop machine stopped accessing the internet. I have not been able to attribute the lost internet access to a software upgrade, change, or other event. The connection was fine one day then totally gone the next.
I have read the thread of a similar problem in this forum. I have tried many of the suggestions and many other ideas and still no change.
Computer: Emachines, Model ET1331G
Processor: AMD IIX2 235e
Memory: 6 gb
Sys type: 64 bit
Op system: win 7 home premium

Pinging works in standard and safe modes. No access by any programs in standard or safe modes.
Just a few minutes ago, the latest windows updates came through and installed during a reboot.
I am still able to see other devices on my home network. I am also still able to print to the network printer (not wireless, hard wire to router)

Here is the results of running ipconfig/all
Windows IP Configuration

Host Name . . . . . . . . . . . . : Bruce-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.pa.comcast.net

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : hsd1.pa.comcast.net
Description . . . . . . . . . . . : NVIDIA nForce 10/100 Mbps Ethernet
Physical Address. . . . . . . . . : 00-25-11-5A-39-78
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::7d75:5cb4:d739:d3a1%11(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.0.105(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, December 14, 2010 7:14:51 PM
Lease Expires . . . . . . . . . . : Tuesday, December 21, 2010 7:14:49 PM
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DHCPv6 IAID . . . . . . . . . . . : 241193024
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-42-A8-09-00-25-11-5A-39-78
DNS Servers . . . . . . . . . . . : 192.168.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.hsd1.pa.comcast.net:

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* 9:

Media State . . . . . . . . . . . : Media disconnected
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

Tunnel adapter 6TO4 Adapter:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft 6to4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes


Things I have tried
IP setting for autodetect.
Proxy not checked.
Updated network adpater driver.
Run full virus scan. (no hits)
Disabled windows firewall and virus scanner and rebooted.
stopped start up programs.
disable and renable network adapter.
By-passed router and connected straight to cable modem.
Safe mode with networking active.
Windows diagnostic tool.
Downloaded all latest windows updates (windows updates all still work).

Any other ideas short of reinstalling windows?

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#2 AleX

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Posted 15 December 2010 - 03:52 AM

If windows updates are updating that means your computer's accessing internet.

Check your hosts file (on location %systemroot%\system32\drivers\etc\ (C:/Windows/System32/drivers/etc/)).

Some viruses can cause this state.

#3 bufftron

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Posted 15 December 2010 - 09:28 AM

System Restore might offer a solution.

#4 Trezax

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Posted 15 December 2010 - 12:08 PM

Maybe you have DNS problems, try to use Google Public DNS or OPENDNS name servers.

#5 eastpa

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Posted 16 December 2010 - 09:46 PM

I set DNS to OpenDNS, no change.

Checked for Restore point prior to having the problem. No luck.

Checked for host files. The files are there. Is there a way to check if the files are corrupt or other problems?

One thing I noticed today is that I am unable to access the setup for my router. When I type in the IP address, nothing comes up. No issues accessing the router from XP machine. Not sure if this provides any other clues to the problem. The network map shows the router, other connected PC's and connected printer.

I also tried going into msconfig and stopping all the "start up" programs, but not help.

#6 Jacee

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Posted 17 December 2010 - 12:38 PM

See if flushing the DNS cache and restoring MS's original Hosts file helps.

Copy and paste these lines in Note pad.

@Echo on
pushd\windows\system32\drivers\etc
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
popd
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
del %0


Save as flush.bat to your desktop. Right click and run as Administrator. Your computer will reboot itself.

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#7 eastpa

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Posted 18 December 2010 - 09:23 AM

Thank you Jacee!

The "flush" batch file did the trick. :thumbup2:

#8 Jacee

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Posted 18 December 2010 - 12:34 PM

You're most welcome :thumbsup:

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