Sony VGN-S4HP/B User Manual page 115

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Customizing Your VAIO Computer
If the This device is working properly message is not displayed, the device is not working properly.
Click OK to close the Properties window, then reinstall the driver.
To reinstall the driver, right-click Uninstall and click OK when the Confirm Device Removal window appears. When a
message window asking you to confirm restart, click Yes and wait until your computer restarts. Then, repeat from step 2 in
Installing a Driver (page 112).
If your device is not displayed in the Properties window, the device is not working properly.
Repeat steps 1 through 4 in the previous sections to check the driver's installation. Click your device, then click Uninstall to
remove the driver. Click Yes to restart the computer. When the computer restarts, repeat from step 2 in Uninstalling a Driver
(page 117).