Laptop won't connect to wifi after powering from standby

Before I went to sleep last night, I put my laptop on standby, and when I powered it on this morning, it would not connect to our residential wifi. The other computers in the house have their internet connections working fine, and my laptop's connection was working fine before I went to sleep. It wouldn't connect to the network whenever I tried to repair the connection, which I attempted a lot of times.

I did a system restore to a point before I put it on standby, but that didn't solve anything. I uninstalled a game I had installed that night, but no dice.

I looked at the back, at the ethernet jack where the LED lights for the internet are, and they're dead. No orange, no green. I don't know what changed; as I said, it was working fine the night before. No slowdowns or anything.

My laptop is a Dell Latitude D600... at least two years old now.

All help would be appreciated.

 

Is this wifi, or ethernet? The ethernet jacks lights have nothing to do with wifi.

Is it possible the wifi switch was turned off? (be it a hardware switch of FN+key)

Did you reboot and see if the problem persisted?

Does the wireless adapter still show in device manager?

If you look at network properties, is the wireless adapter in an enabled state?

Can you see wireless networks and it will not connect, or are no wireless networks available?

 

It's wifi. Well, either way, the LED lights aren't blinking at all, and I know they are supposed to. (I have another laptop of the same model and it's also on wireless, but it's working fine and its LEDs are blinking.)

Pretty sure the wifi switch is on, as there's no hardware switch and pressing the FN keys does nothing for me.

I've rebooted quite a lot of times and still no dice. Nothing is missing in the Device Manager. Whenever I try to repair the connection, the wireless adapter is disabled and then enabled, so it's certainly enabled.

As for the wireless networks, I can see two folders out of six or eight that is being shared across the network, which I can't connect to, if that counts.

 

In device manager, please list what you see under network adapters.

The user manual I was able to download does not specify Fn key combinations. Can you tell which Fn key combo enables/disables wireless?

What operating system are you using?

Are you using an internal wireless adapter, or is it one in a pcimia slot?

BY can you see wireless networks, I mean when you click on your wireless network icon in the system tray (by clock) and the CHOOSE A WIRELESS CONNECTION dialog box appears, is there anything in it?

 

Oops. No, there is nothing on the wireless networks list.

The key is FN+F2, and yes it's an internal wireless adapter. Running XP SP3.

Under network adapters, I've got:
- Dell TrueMobile 1300 WLAN Mini-PCI Card
- Broadcom 570x Gigabit Integrated Controller #2
- Hamachi Network Interface (which I don't really use anymore).

 

right click truemobile, choose uninstall, reboot

Windows should reinstall the hardware on next start. Check the wireless netowrk list again...also, do you normally use windows wireless networking or a third party utility provided by dell?

 

Could you explain that? Though to the best of my knowledge I'm only using what Windows has.

EDIT: I just did what you said; I uninstalled it and then rebooted. Windows installed it again, but still no dice.

 

Some network adapters have a different utility for connecting, and managing wireless networks.

If you can do a screen shot of the dialog box mentioned in post #5, that would be helpful

 

I did a system restore to a much earlier point than I did at first, and now I've got the connection back. Thank you for your help.