experts meri usb hai kingston 4gb or me jub b usse kisi computer me lagata hon to wo unknown usb device ka error deti hai 4,5 bar insert karne k bad phr pick karti he or kabhi kabhar pick karne k bad kuch b copy karta hon to phr se unknown usb device error deti hai, mene or computer me b check ki hai ek do me wo phli bar se chli but aprx sub me wohi error deti rahi, kya karon plzz help me????