125Troubleshooting (Advanced)The CD/DVD drive cannot be turned on or offz After turning off the CD/DVD drive, did you try to turn it on again immediately?After turning off, you must wait for about 20 seconds until it is possible to turn on (or open the disc cover).z During writing or reading of a disc, it is not possible to turn off using [Manual switching] of [The optical disc drive’s Power].Cannot eject discz Check that the computer is turned on.The drive power/open switch works only when the computer’s power is on.When [Optical Drive Power] is set to [Off] in the Setup Utility, it is not possible to open the disc cover unless Windows isrunning.z Press the center of the disc cover to confirm that the disc cover is locked firmly.The disc cover will only open if it is in the firmly locked position.z To remove a disc when the computer is turned off, insert a pointed object (e.g., the bent-out tip of a paper clip, or the tip ofa pencil or ballpoint pen) into the emergency hole on the bottom, and then move (Î page 59).The sound is not heardz Try changing the mute by pressing Fn+F4 or Fn+F6.z With the following procedure, check that the Windows sound function is operating.(If it is not operating, pressing Fn+F5 or Fn+F6 displays the pop-up icon shown on the right, but there is no sound.)A Click (Start) - [Computer] - [System properties] - [Device Manager].z A standard user needs to enter an administrator password.B Double-click [Sound, video and game controllers] and check if is displayed.If is displayed, click the driver for which is shown, press Del, and click [OK] in the confirm deletion screen.Then restart the computer.z Check whether the digital device output is enabled with the following procedure.A Click (Start) - [Control Panel] - [Hardware and Sound] - [Sound].B Click [Playback] (When the digital output device (HDMI) is displayed, click [Digital output device (HDMI)] andremove the check mark.)Problems with Sound
