Computer losing Internet connection

Hi all,

I have a client that has several computers on a network and one of them will lose connection to the Internet 2 to 3 times per day. In order for him to get it restarted he has to reboot his computer. Somewhere in the posts I noted that it could be a antivirus problem so we turned off nod 32 and the issue continued. I tried doing a "netsh winsock reset" as well as flush the DNS and neither of those worked either separately or in combination. I can use the ping command to ping (or any other well-known web sites) and I get very rapid returns.

As I said this will happen 2 to 3 times a day. There does not seem to be a pattern to the time of day when it disconnects (or loses its connection to the Internet). He is still able to print on the network and can access the network attached storage devices just not able to remain connected. Generally he notices this when he is trying to send and receive email using Microsoft Outlook (although, this is also sporadic and he can use his email for hours at a time then suddenly it goes down)

This one has me a bit puzzled and I'm wondering if anybody else has run into this type of situation.

The computer has a 2.8 GHz CPU with 4 gigabytes of RAM and running Windows 7 which seems to be up-to-date.

Thank you for any help you might tell us on my way.
Pat ClancyCEOAsked:
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Dave BaldwinFixer of ProblemsCommented:
What is the exact error message?
JohnBusiness Consultant (Owner)Commented:
After answering Dave's question, do the following:

1. Run System File Checker. Open cmd.exe with Run as Administrator and run SFC /SCANNOW twice. Allow to complete.

2. Reset TCP/IP:

Open cmd.exe with Run as Administrator
Then  netsh int ip reset c:\resetlog.txt
Also, ipconfig /flushdns followed by net stop dnscache followed by net start dnscache

Now restart the computer.

3. Check the Wi-Fi card properties, power management and make sure it is not allowed to be turned OFF.
4. Check in Windows Power Management that Wi-Fi is set to Maximum Performance.

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Pat ClancyCEOAuthor Commented:
To Dave, there is no error message....

To John,

I will do tasks you mention in your post. Unfortunately it is going to be a week or so before we get it done. I can correct the issue simply with a restart of the computer. However, I had not thought of an SFC which I will do remotely.

Thanks and I will respond a quickly as I can.

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JohnBusiness Consultant (Owner)Commented:
Thank you for the update.
Pat ClancyCEOAuthor Commented:
Thank you for trying...
Pat ClancyCEOAuthor Commented:
Although we really didn't solve the problem, John had the best idea and one that I will use in the future.

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