If the device icon is still not displayed, check the cable connections and device-jumper settings, and resolve any conflicts that might exist.

vThe CD-RW/DVD-ROM Combination Drive is not recognized by the operating system, or the drive performs erratically.

Some computers have Compatible and High Performance modes for mass storage devices. Normally, the CD-RW/DVD-ROM Combination Drive functions better under the High Performance mode. However, if your drive is not functioning properly in that mode, you might need to use the Compatible mode.

Use the following procedure to check the configuration-setup information for your computer.

1.Access your system configuration utility program. Pressing F1 at system startup does this on most Lenovo computers.

2.Select Advanced/IDE Configuration.

3.Scroll down to the SATA#1 Configuration section.

Refer to the documentation that comes with your computer for additional details on selecting IDE performance modes.

vThe disc cannot be read. Take the following actions:

1.The disc might be dirty; clean it as described in “Caring for a CD or DVD” on page 1-5.

2.The disc might be defective; try another disc.

3.The disc is not ISO-9660, High Sierra Group (HSG), or Universal Disc Format (UDF) compatible. Check with your place of purchase.

vThere is no sound from the disc.

1.Check that you are not using a data CD.

2.Adjust the audio-adapter volume control. See the documentation that comes with your audio adapter and audio-CD player program.

3.Enable digital audio as in Appendix D, “Enabling Digital Audio Extraction,” on page D-1.

vUnable to Create Overlay Window message appears when you use WinDVD with Windows 2000.

1.Your video device driver needs an update to enable overlay support. Contact the manufacturer of your video adapter or your computer for updates. Some device drivers are provided on the ThinkCentre CD-RW/DVD-ROM Software and User’s Guide CD.

2.The resolution of your screen might be too high. Try setting the resolution to 800 x 600 x 16 bpp at 60 Hz.

vDVD movies do not start automatically when inserted into the CD-RW/DVD-ROM Combination Drive.

DVDs that contain both programs and DVD Video content will autoplay the program content. To view the video content, start WinDVD manually.

vVideo appears to be choppy or is dropping frames.

1.Ensure that DMA is enabled on for your computer hard disk drive controller.

2.The resolution of your screen might be too high. Try setting the resolution to 800 x 600 x 16 bpp at 60 Hz.

3.If your computer microprocessor has less power than a Pentium II 450 microprocessor, some jerkiness is normal on certain DVDs.

B-2ThinkCentre and Lenovo CD-RW/DVD-ROM Combination Drive (Serial ATA) User’s Guide

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Lenovo 41N5624 manual Select Advanced/IDE Configuration, Disc cannot be read. Take the following actions