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Background info:
Comcast cable internet and TV
Regular modem
Linksys WRT54G router
Windows7 desktop

The problem I'm seeing is that our wireless connection cuts out about 5 minutes after turning on our main desktop. Turn off the main desktop and wireless begins to work again. Throughout all of this, the wired connection works fine, and I have no problem connecting to the router either. Any ideas what could be causing this?

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Any chance your desktop has a bluetooth adapter installed? Some bluetooth adapters are known to cause WIFI coexistance issues.

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No bluetooth adapters are installed. – fred Jan 25 '13 at 17:03

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