[Trent M]

It's a Dell Precision M4400 laptop running Windows XP Pro.
Not sure how to know if it's built-in wireless or a wireless card (I think it's built in).
My D-Link router Firmware is the current version, which I haven't yet tried reinstalling.
The wireless adaptor is Intel WiFi Link 5300 AGN.
I found an update to the wireless adaptor, but the new driver didn't help.
The router is fairly new, and otherwise seems to work well.

Trent

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Did you uninstall current wireless adapter driver, first, before installing fresh copy?
Are there any other computers connected to the same router?

[Broni]

Did you uninstall current wireless adapter driver, first, before installing fresh copy?
Are there any other computers connected to the same router?

[Trent M]

Hmmm... no I didn't. I'll try that.

No other computers are connected.... just a wireless printer.

Trent

[Broni]

Let's see what happens...

[Trent M]

No luck.

[Broni]

Well, the way I see it, the only option left - there is something wrong with the router.
Probably I'm asking the obvious, but did you disconnect it from power source for 1 minute, to reset it?
If so, I'd suggest to borrow a router from a friend, or neighbour, for 30 minutes, and see, if the problem is still there.

[Trent M]

Yes, I had the router unplugged for a while. My sister has the same router, so maybe I can try that --- could I just bring my laptop to her house and try connecting to her server, or do I have to bring her router to my house? (I think I know what your answer to that question will be).

When I google the issue, it looks as though other people have the same problem. I will see if I can find a solution among them. Otherwise, I may try calling D-Link support to see if they have any ideas.

Well at least we've identified where the problem is, and I can temporarily get around it by disconnecting my router. Thanks for all your advice!

Trent

[Broni]

The location doesn't matter, so you can go to your sister's place.

Calling D-Link may be a good idea as well.