Sony PCG-GR250 - Manual (Page 113)

Using Your Recovery CDs
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7 From the Action menu, click Uninstall. This will remove the device driver
from your system. Click OK to confirm this action. Repeat as necessary.
8 Restart your computer. To restart, click Start in the Windows taskbar, Turn
Off Computer, and then click Restart.
9 When the Windows desktop reappears, Windows will automatically reinstall
the device drivers from the Driver Recovery CD.
Reinstalling all drivers with the Driver Recovery CD
1 Turn on your computer. If your computer is already on, close all
applications.
2 When the Windows desktop appears, insert the Driver Recovery CD into the
optical disc drive.
3 Click Start in the Windows taskbar, and then Control Panel. The Control
Panel window appears.