After Disabling my network connection my PC is slow

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February 23, 2014 at 13:40:31
Specs: Windows 7, Intel C2D e8600 @3.5GHz
Slow computer after disabling network connection. After disabling the network connection i am currently using my Windows is extremely slow to respond and does not seem to be accessing the HDD when needed, only after around 30 seconds does the HDD start to spin and the computer becomes responsive again. Once the network connection is restored the PC will be fine and work without an issue. Any ideas on what this may be as i have looked everywhere for an answer and not found one single thing that is remotely close to a resolution ! I work in IT, as a first line analyst and have asked technicians I work with and they have no idea. Would be good to get to the bottom of this.

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#1
February 23, 2014 at 13:48:04
Are you sure there are no persistant connections to network drives? That would drastically slow things down. Whatever it is, there must be some network resource that the computer keeps trying to access until it times out.

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#2
February 23, 2014 at 14:31:38
I have not network resources for that PC, never have. I use a VPN for my network connection and then there is obviously my antivirus and such other network resource heavy applications but would they slow down performance when there is no network connectivity ?

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#3
February 23, 2014 at 14:35:01
I guess that anything that is trying to contact the mothership will slow things down when the network isn't responding. Have you turned off automatic updating for the antivirus?

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Related Solutions

#4
February 23, 2014 at 14:41:26
No have not tried that yet, although the slow down start before I logon, even loading windows is slower. Just does not make sense, its like the HDD is failing, you can hear it spin up when the PC starts and then it stops and starts randomly until I re-enable the network connection. So odd. In the process of upgrading so not a huge issue but would be nice to find out why its happening, after all that's why we work in IT.

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#5
February 23, 2014 at 16:09:33
Is this system (or was this system ever) connected to a server network? Could it be trying to log onto a network?
Run msconfig, Start Tab and disable everything except Microsoft and antivirus, Apply, restart the machine and try it again. If not then try disabling services related to networking one at a time to see if any effect the system when disabled. If not, enable and try another. If you are not connected to the internet, you can even try antivirus and firewall.
Install and run Process Explorer and look through processes that way to see if there is anything suspect. Turn off any updaters that might be trying to connect.
Scan with Malwarebytes in Safe Mode.

You have to be a little bit crazy to keep you from going insane.


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#6
February 23, 2014 at 22:47:21
Please download and run ListParts by Farbar (for 32-bit system):
http://download.bleepingcomputer.co...
Please download and run ListParts64 by Farbar (for 64-bit system):
http://download.bleepingcomputer.co...
Click on the Scan button.
The scan results will open in Notepad.
Copy and Paste the contents into your reply.

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#7
February 23, 2014 at 23:10:05
Think a scan is in order here, shall do a scan when I am back from work later. I will post the results, I am thinking it will be bad.

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#8
March 1, 2014 at 05:55:50
Did a scan with malwarebytes and found 2 items of malware, that was on all partitions. Next thing to do is to startup with services disabled I guess.

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