93Troubleshooting (Advanced)C Click [Defragment] on the [Disk Defragmenter] screen.Defragmentation begins. Wait for a moment.D When “Defragmentation is complete...” is displayed, click [Close].z If operations slow down during streaming playback, confirm the number of colors of the display with the following proce-dure: *3A Click [start] - [Control Panel], and from the [See Also] area click [Other Control Panel Options] - [Intel(R) GMADriver for Mobile] - [Display Setting].B Confirm that [Color Quality] is set to [32 Bit].*3 Note that this may not improve the speed of all operations.Cannot scroll with the Touch Padz Click [start] - [All Programs] - [Panasonic] - [Touch Pad utility] to start up the Touch Pad utility.z Click [start] - [All Programs] - [Panasonic] - [Touch Pad utility settings] - [General settings], and check that the check markis added for [Use Touch Pad function].z If horizontal scrolling is not possible, in the above sequence, check that the check mark is added for [Use horizontal scrollfunction] in [General settings].z If a message appears indicating that “Flat Pad communication failed, so cannot start up Touch Pad utility,” check the fol-lowing, and make the appropriate settings.• If an external mouse is connected:External mouse applications and drivers cannot be used at the same time as the Touch Pad utility. Use either the TouchPad or an external mouse.When using an external mouse When using the Touch Padz Uninstall the Touch Pad utility using the following pro-cedures.A Click / on the notification area, and click[Exit].B Click [start] - [Control Panel] - [Add or RemovePrograms].C Click [Touch Pad Utility], and click [Change/Remove] to remove the program.z Uninstall the external mouse application and driver.(Î page 65)z Check to ensure that [Touch Pad] is set to [Enable] in the[Main] menu of the Setup Utility.z Use the following procedures to confirm that the Touch Paddriver has been installed.A Click [start] - [Control Panel] - [Performance andMaintenance] - [System] - [Hardware] - [DeviceManager].B Double-click [Mice and other pointing devices]. Confirmthat [Synaptics PS/2 Port TouchPad] is in this list.z Disconnect the external mouse and restart your computer.