16First-time OperationGetting StartedUseful InformationTroubleshootingAppendixYou can select the Classic view of Control Panel or the Classic Start menu. You can also change the way a user logs onor off. This manual explains using the Windows Vista default setting (not Classic view or Classic Start menu etc.).z User Account ControlUser Account Control is a new security component of Windows Vista to stop unauthorized changes to your computer.The User Account Control message will pop up every time you try making an important change to your computer.z Sound and Video• When playing AVI filesWhen the computer is stressed with lots of application software running or when you are using the computer in hotlocation, the sound and images in AVI files may be cut during playback.The following operations may improve the situation.- Click or on the notification area, and click [High performance].(When using the computer in hot location, lower the temperature in the environment to set [High performance].Setting [High performance] in hot location does not improve the situation.)• When you play back AVI files with the Windows Media Player full screen, the audio and images may not matchwith each other. In this case, do either of the following for playback.- Play back with the Windows Media Player on the window display.- Use WinDVD for playback.• When you play back motion image files such as DVD-Video, the following troubles may occur.- When using Windows Media Player, images are not played back smoothly.- When using WinDVD, the playback screen becomes suspended.If this occurs, click (Pause) of WinDVD and click (Play). The sequel is played back.• Sound (e.g. MP3, WMA) and video (e.g. MPG, WMV) recorded in PC Cards and SD Memory Cards may be inter-rupted during playback. If this happens, copy them to the hard disk drive and play back.• Depending on the processing status on Windows, sound may be interrupted at Windows startup. You can mute thesound at startup.A Right-click the desktop and click [Personalize] - [Sounds].B Remove the check mark from [Play Windows Startup sound], and click [OK].z Windows UpdateYou can update to the latest patches and service packs for Windows with the following menus.(Start) - [All Programs] - [Windows Update]Do not apply “Driver Updates” even if a message to update a driver appears. If a driver update is required,contact your technical support office.Regarding Windows Vista