Oct 21, 2009

Unknown Base System Device Windows 7 in Compaq CQ

So if you finish installing windows 7 you'll find most of the drivers installed automatically but if you see unknown base device with yellow marks on device manager it is the card reader driver:


right click and select run as administrator. install and done!


  1. my laptop still cannot auto install for the base system devide.... i had no idea with it. any 1 can hlp me solve the problem?

  2. get the hardware ID for the base system device, post it here and ill get you the proper driver