I got the same issue, it also happens with a external usb wifi stick.

Signex,

Go to Drivers & Downloads enter your service tag number, then select your operating system. Under Network, download and install the latest drivers.

Try these tweaks....

Start, control panel, device manager. Click on Network and then right click on your wireless adapter, left click properties, power management. Uncheck the box, allow computer to turn off this device to save power.

Go to the power options, and changed the Wireless Adapter Setting, from Maximum Power Setting to Maximum Performance.

For the USB Adapter...

Start, control panel, device manager.

Go to the USB Controller section and click the + sign.

Go to each USB Root Hub and right click on it, left click properties, left click power management. Uncheck the box, allow computer to turn off this device to save power.

Restart your computer.

Rick

I already did tho's fixes, didn't work. I might check the wifi card and reseat it when i get the time.

The usb device worked with no problem before, but atm we have some internet problems with our internet service.

Signex,

Those tweaks usually help.

I also use these Recommended Wireless Router Settings I use channel 11 and don't have any problems with any device connecting.

Rick