Sam Goldwasser wrote:
OK, so here's the really strange problem dejour.

One day last week, my Internet access dropped out a couple times
(I have DSL). That's not totally unusual. But the next day, it
would only stay up for a couple minutes after booting and then was dead.

Swapped DSL modem - nothing.
Bypassed wireless router - nothing.

Figured, OK, so for some reason, the PC's on-board Ethernet port is dying.
Bought a PCI Ethernet card on eBay for $6 including shipping .

No change.

Then I discovered that it works fine locally. All PCs on my LAN,
wireless or direct, can talk to each other. But for some reason
this PC refuses to go out over the DSL modem. In fact, it won't even
talk to the DSL modem directly (if the Ethernet cable is plugged
into the model bypassing the router and entering the model URL),
but will talk to the router directly.

What the !@#$!@# is going on??? Virus? Some setting got corrupted?

Any info or thoughts appreciated.

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
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I had a similar problem (Lan worked but no internet access, happened
overnight) when my ISP changed hands, hours spent with online help
finally got me to someone helpful who suggested I needed to
release/renew the IP address due to the company changeover and
subsequent maintenance with their equipment.

http://compnetworking.about.com/cs/w...wipaddrwxp.htm