Dell OptiPlex 755 - Manual (Page 214)

Many drivers, such as the keyboard driver, come with your Microsoft Windows operating system. You may need to install drivers if you:
l Upgrade your operating system.
l Reinstall your operating system.
l Connect or install a new device.
Identifying Drivers
If you experience a problem with any device, identify whether the driver is the source of your problem and, if necessary, update the driver.
Microsoft® Windows® XP
1. Click Start® Control Panel.
2. Under Pick a Category, click Performance and Maintenance, and click System.
3. In the System Properties window, click the Hardware tab, and click Device Manager.
Microsoft Windows Vista®
1. Click the Windows Vista start button , and right-click Computer.
2. Click Properties® Device Manager.
Scroll down the list to see if any device has an exclamation point (a yellow circle with a [!]) on the device icon.
If an exclamation point is next to the device name, you may need to reinstall the driver or install a new driver (see Reinstalling Drivers and Utilities ).
Reinstalling Drivers and Utilities
Using Windows Device Driver Rollback
If a problem occurs on your computer after you install or update a driver, use Windows Device Driver Rollback to replace the driver with the previously installed
version.
Windows XP:
1. Click Start® My Computer® Properties® Hardware® Device Manager.
2. Right-click the device for which the new driver was installed and click Properties.
3. Click the Drivers tab® Roll Back Driver.
Windows Vista:
1. Click the Windows Vista start button , and right-click Computer.
2. Click Properties® Device Manager.
3. Right-click the device for which the new driver was installed and click Properties.
NOTE: The User Account Control window may appear. If you are an administrator on the computer, click Continue; otherwise, contact your
administrator to continue.
NOTICE: The Dell Support website at support.dell.com and your Drivers and Utilities media provide approved drivers for Dell™ computers. If you install
drivers obtained from other sources, your computer might not work correctly.
NOTE: The User Account Control window may appear. If you are an administrator on the computer, click Continue; otherwise, contact your
administrator to enter the Device Manager.