Device drivers are a set of software instructions that control the interface between a computer and a connected peripheral device. Device drivers tell your machine what the device is, what the device does, and all the other instructions needed for proper operation. For instance, Windows does not ship with a specific device driver set for all the features in your new Logitech keyboard that has custom buttons.
Ref:
http://www.driverstorer.com/help.html
A device driver gives the operating system the tools to use a specific device.
what is the meaning of the system device
it means that the driver of that device is either not loaded or not properly loaded.. load the driver once again from the driver disk and the sign will go off..
No, the device driver is not uninstalled.
What is the best way to change a device driver?
roll back reverting the driver
device manufacturere most of the time..
How to backup device drivers in win7
Device Driver
Device management controls peripheral devices by sending them commands in their own proprietary language. The software routine that knows how to deal with each device is called a "driver," and the OS requires drivers for the peripherals attached to the computer. When a new peripheral is added, that device's driver is installed into the operating system
airbag
Himem.sys
Himem.sys