Netgear WAB501 and blue screen

Hi, i have the netgear WAB501 wireless adapter. With my notebook Acer aspire it works for a few month, but yesterday, i've turned the computer on, it showed me the blue screen and starts only if i unplug the card. when i uninstall the software for the card, the computer starts even when the card is pluged in. The blue screen show me the Adresses of the error but not the program that failed. 0x00000007e ... have anyone a solution for me? thank you. best regards. Torsten