http://support.dell.com/support/downloads/driversl ist.aspx?os=WW1&osl=EN&catid=-1&impid=-1&serviceta g=&SystemID=LATITUDE+D820&hidos=WLH&hidlang=en&Tab Index=
Začni softwarem z System Utilities: Notebook System Software, pak Chipset, Video, Network
Nenapsal jsi system- XP, nebo Vista