Duplicate Name Exists on the Network

I have a PC that is connected via ADSL router to the internet. I have another PC and a Laptop that are connected wirelessly via this internet connection. When I log on to my main PC I get a message that says "Duplicate Name Exists on the Network". I can't work out where this duplicate name is or how to find it. Please can you tell me what to do? Also my PC, the main one, is very very slow- could this be a reason for its being slow or should I look for something else.
elizabethberesfordAsked:
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lrmooreConnect With a Mentor Commented:
On both PC's and the Laptop -
right-click My Computer, select Properties
Select Computer Name tab
Check "Full computer name"
Apparently, two of them have the same name.
On one of the two that is the same,
  To rename this computer or join a domain [ Change . .]
Type a new Computer name that is different from the other 2

OK your way out, reboot and everything will be much happier.
Yes, it could cause the main PC to be very very slow.. NetBios is funny that way..


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elizabethberesfordAuthor Commented:
Hi thanks very much for your help. It worked.
Liz B
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lrmooreCommented:
Great!
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