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Windows7 Internet connection

Posted on 2011-09-12
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Last Modified: 2012-06-22

I have a Dell Inspiron 1545 with Win7 Home Premium 64.  

Machine is about a year old.  4gb RAM.

About a week ago it started to be very slow.  

I ran ComboFix, MalwareBytes & Dr Web.  I ran SpinRite to clean up any disk issue.  I removed Dr Web & CF from the machine.  No other installed firewalls.

I can not access the internet with IE, FireFox or Chrome.  However I can ping my.yahaoo.com from a CMD line

I ran the various NETSH reset commands as found in troubleshooting areas.  I ran scannow /sfc.  I tried disabling both wireless and wired adapters, tried Win7 repair.  Nada.

What else do you suggest other than wipe/format/reload?

Many thanks,
Rob



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Question by:coldspringsolutions
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16 Comments
 
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Expert Comment

by:yjchong514
ID: 36527203
Dear EE members,
What you mean cannot access via browser? Can you upload a screenshoot?

Rdgs,

yjchong514
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Expert Comment

by:J1nxx
ID: 36527235
Try resetting the IE settings to default. Also try re-installing a browser?
If the re-installed browser does not work, you may have some sort of a rootkit blocking access to Internet even though you can ping an address
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Expert Comment

by:J1nxx
ID: 36527237
Also try running either AVAST! or smitfraud fix
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by:nobus
ID: 36527622
what does ipconfig return (in a dis box) ?
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Author Comment

by:coldspringsolutions
ID: 36528607
ipconfig returns a long list of media disconnected messages, one for ethernet, two for wireless and about 50 for virtual tunnel adapters (which I've never seen before, a Win7 feature).  

LAN adapter reads:
home
192.168.1.11
255.255.255.0
192.168.1.1

I will try re-installing browsers and tools mentioned above.  I thought the tools above were sufficient to get rootkit.  I also ran KAV Rescue CD.

More tonite.  Thanks....
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nobus earned 250 total points
ID: 36528655
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Author Comment

by:coldspringsolutions
ID: 36528853
I've already tried a scannow /sfc
Will read up on win7 repair.  I know xp and vista had cd repair solutions.  The win7 startup repair didn't fix it.

I'm thinking it is indeed a rootkit since kav 10 rescue cd was able to pull down updates.  Once booted, mbam can not get updates, as browsers too get page not found.
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Expert Comment

by:J1nxx
ID: 36528980
If you create a different user account will it work? Silly I know, but I have seen it before.
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Expert Comment

by:J1nxx
ID: 36528990
Also try boot into safe mode with networking.  If you can access Internet in safe mode it is indeed some sort of spyware/root kit blocking access
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Author Comment

by:coldspringsolutions
ID: 36529242
No Internet access in safe boot mode either.
But can successfully ping and get ip address.
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Expert Comment

by:J1nxx
ID: 36529260
Perhaps time to consider a format......
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Author Comment

by:coldspringsolutions
ID: 36533729

After many hours of clicking, I found that a 64 bit version of IE works fine on the laptop.

IE x86, Firefox x86 and Chrome x86 do not work.

Updaters to MBAM, etc, do not work.  

I believe the issue is with rundll32.exe that allows x86 programs to work on an 64 bit box, limiting the i-net connections....

Any other thoughts?

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Author Closing Comment

by:coldspringsolutions
ID: 36555278
It turns out that the OS is corrupt.  64 bit versions of browsers work fine,  

32 bit browsers do not work.  Some 32 bit programs do not work.

Many thanks to all.
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Expert Comment

by:nobus
ID: 36555622
odd i did not get an A grade...
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Author Comment

by:coldspringsolutions
ID: 36556366
Your solutions did not solve the problem.
Scannow /sfc was tried as mentioned in orig post
System repair in startup did not resolve

I do not want to reinstall OS.

Thank you.
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Expert Comment

by:nobus
ID: 36556610
that's your choice - however - why did you not gave any feedback?  maybe we could help you further
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