yes, we did and it worked all last nite.

it is a usb adapter and  it does not show up in my list of adapters,sometimes it shows as unknown device; the adapter works on seperate computer

Is it a USB wireless adapter or a PCI wireless adapter.  Does it show up in Device Manager when you expand the listing for Network Adapters?

 

Steve

Did you install the software for the device before it was first plugged in? Have you tried different USB ports?

 

Steve

Please give a clear answer to all of my questions!!

 

Steve

yes, we installed the software before the usb adapter was initially plug in. and we have tried different usb ports --still doens't turn on

Have you tried a different USB port on the system?  Since it works on another computer it might be a problem with the USB port you are (currently) using.

yes,  we have tried different usb ports,  last time it actually worked; just beofre we powered down the computer we were prompted to power off the device, never recognized again

Have you tried booting to Safe Mode and checking Device Manager (with the adapter connected)?  I've seen in the past where things show up in Safe Mode that don't normally show up ...