I have 2 ENGTX280nivida cards which i run in sli mode but have noticed now when i start up from previous day the driver of the second card is lost and i have to reinstall.but if i shut down for a hour or so its still there.it only happens if i shut down for six hours or more.im running windows xp 2000,i've tried repair install and restore to early date ,nothing works?

shane, May 2009