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Installing driver


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Installing driver

  1. 1. Installing Drivers
  2. 2. Working of Driver• A device can only function on the basis of its specialized commands• Only device driver has knowledge of these commands• Device driver converts the commands from the computer to the specialized commands of the device• Device driver acts as a translation medium between the device and the operating system of the computer System Device Driver Device
  3. 3. Uses of Drivers• Updates - Enables updates for a hardware device to be independent of the operating system• Troubleshooting - Used in case of a problem with a hardware device• Better Performance - Provides for better usage of the system
  4. 4. Viewing Device Drivers and show it practically of CDROM drive and LAN card• Users can test the status of a device driver• It is also possible to check whether a driver is installed for a particular hardware device• Driver tab displays the information related to the driver installed Driver Tab
  5. 5. Driver Signing• The Microsoft Windows Hardware Quality Lab ( WHQL ) test program certifies device drivers that meet a certain standard• A digital signature is embedded in the device drivers that pass the WHQL test and these drivers are called signed drivers• Updated drivers have to go through testing process again to get a new digital signature• There are three options for driver signing Ignore, Warn and Block
  6. 6. Driver Signing• Automatic installation of a new unsigned device driver can lead to following problems: – Installation of inferior drivers – can corrupt system memory and cause errors in functioning of system – Overwriting of system files – leads to compatibility problems. Devices that use these files will stop functioning and working of entire system deteriorate – Viruses – Installation of incompatible drivers
  7. 7. Complying with HCL• Microsoft maintains a list of devices that have passed compatibility test of Microsoft Windows and are of high quality. This list is known as Hardware Compatibility List (HCL)• You can comply with HCL by ensuring that Microsoft has certified all the devices connected to your computer• It is possible to recognize and deal with unsigned driver files and system files with the help of the File Signature Verification tool
  8. 8. Show sigverif command practically• Installing the driver using add hardware wizard• Viewing signed driver from msinfo32
  9. 9. How to Become Perfect• Read and understand the instructional manual or text file that is supplied with the driver• Incorrect installation or updating of drivers can corrupt the operating system• Keep in touch with driver manufacturer for latest updates.• Search the manufacturer’s web site for available updated versions of the driver.
  10. 10. How to Become Perfect• It is also useful to check for updated versions of drivers on websites such as, and• Be very cautious in following the instructions when you are uninstalling a driver
  11. 11. Troubleshooting• Any incorrect operation with respect to hardware drivers can cause great harm to the system.• Various problems that may occur are: – Computer does not Work Properly after Installation of New Driver – Computer does not Update a Driver in Memory – Cannot Download Driver Updates from the Windows Update Site