I had that problem myself, if you hace a cd wth drives on it, and a wireless configuration utility that comes with the card try this, it may sound wierd but go for it, take out the card, remove the drivers and any trace of the card from the HD and the regestry, then run the computer for a while, then reinstall the drivers from the cd, and then reinstall the card, worked wonders for me, oh and also right clock on my computer, then goto manage, goto Windows Zero Configuration Utiliy, disable it, because that interferes with things aswell.