Toshiba Portege 4005 User Guide - Page 206

206 If Something Goes Wrong Resolving a hardware conflict button. This button is in the small hole next to the CD-ROM or DVD-ROM eject button on the face of the CD-ROM/DVD-ROM tray. Some discs run correctly but others do not. Check the type of disc you are using. The DVD-ROM drive supports the Digital Versatile Disc (DVD) formats DVD-ROM, DVD-R (read-only), and DVD-RW (read-only) plus CD-ROM, CD-R (read-only), and CD-RW (read-only). The CD-ROM drive supports CD-ROM, CD-R (read-only), and CD-RW (read-only). HINT: The DVD-ROM drive is initially set for Region 1 (North America) DVDs. You can change this setting (refer to "Setting general properties" on page 149), but only a very limited number of times. If the problem is with a data CD or DVD, refer to the software's documentation and check that the hardware configuration meets the program's needs. The disc will not come out of the drive when you click the eject button on the screen. Press the button on the CD-ROM or DVD-ROM drive itself. Sound system problems You don't hear any sound from the computer. Adjust the volume control. There is a volume control dial on the computer, a volume control feature in the Windows Control Panel ("Sounds"), or it might be muted. There may also be a volume control on your speakers or headphones or in your audio application. If you are using an external microphone or speakers, check that they are securely connected to your computer.