PC Keeps Going Offline

Ok-- This has been a recurring issue for us that continues to cause frustration:

We have a PC that keeps either going offline or saying Network cable unplugged. It will do this off and on every 10-15 minutes or so until we run a system file checker. This is sometimes followed up with a netsh winsock reset catalog. It tends to only occur when we reboot our exchange server. It is only this user and only on this PC/location.

Things already tried:
troubleshooting data drop (even had it replaced)
replacing all cables
replacing network switch
replacing PC
replacing NIC drivers


HELP
A-MoneyAsked:
Who is Participating?
 
JohnBusiness Consultant (Owner)Commented:
I would be inclined to make an entirely new profile for this user (different username), set it up and delete the other profile.

The same user on two different computers causing the same problem is strange. This is why I suggest new profile.

... Thinkpads_User
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JohnBusiness Consultant (Owner)Commented:
>>> It is only this user and only on this PC/location.

>>> Things already tried:  replacing PC

(1) Another userid on "this" PC is no problem?
(2) A different PC caused the same issue?

If (1), try replacing the user profile. ... Thinkpads_User
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khairilCommented:
Wow, you have do everything. Are this user on Active Directory? if it is, then may be you like to check the power profile. Try reset it to default.
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A-MoneyAuthor Commented:
the user is not in a gpo like that- she is set to as a local admin on her PC.
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JohnBusiness Consultant (Owner)Commented:
I had two questions above. I would like you to answer them so that we may help you.

... Thinkpads_User
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A-MoneyAuthor Commented:
sorry thinkpad I dont know why I didnt see that at first

1) Other users seem to work fine (local administrator account etc...)

2) This also occured on another PC that this user had before as well
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A-MoneyAuthor Commented:
That was the main thing we were hoping to avoid... any other suggestions or ideas as to what would cause this to happen in ADUC? or how it would affecther connectivity?
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JohnBusiness Consultant (Owner)Commented:
I am not sure why the profile is affecting connectivity, but you are saying any other users on two computers on that connection are fine. So it must be in the profile somewhere.

.... Thinkpads_User
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Rob WilliamsCommented:
Make sure on the PC under properties of the network adapter, under power management, that "allwow the computer to turn off this device to save power" is NOT checked.
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jimmy_the_fishCommented:
why not replace the NIC?  They are cheap enough.  Also, try changing the IRQ--either in windows, or in the bios
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JohnBusiness Consultant (Owner)Commented:
Check the author's first post. This is one user on two different computers, so it is not likely a hardware problem in this case. Other users on these same computers do not have the problem.

.... Thinkpads_User
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ChiefITCommented:
The only software related discrepancy that I have seen to drop a users NIC was a conflicting driver.

Go into device manager, select the view drop down menu, and select show hidden devices. If any drivers with a yellow Bang (!) on them, delete them.

However, this still wouldn't be a profile related issue with one user. So, I doubt this is your problem.
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