Have you tried the PC in a different port on the router?
What is your husband doing at the time he loses his connection? Is he uploading large files / sharing files across the internet/network?
When you lose access can he still access other PCs on the network or does everything die?
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What model of router is it?
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Also, see the answer I just posted to your (exact same question) in this thread:
http://www.cableforum.co.uk/board/sh...ad.php?t=14503
to Cable Forum by the way
