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I press the power switch, but the computer does not start or boot-up. Look at the Power status indicator: • If it is not lit, no power is being applied to the computer. Check the following: • If you are running on battery power, it may be low and unable to power the computer. Connect the AC adapter to recharge the battery pack. • Make sure the AC adapter is plugged in properly to the computer and to the power outlet. • If it is lit, check if a non-bootable (non-system) diskette is in the floppy drive. Remove or replace it with a system diskette and press Ctrl-Alt-Del to restart the system. The operating system files may be damaged or missing. Insert the startup disk you created during Windows setup into the floppy drive and press Ctrl-Alt-Del to restart the system. This will diagnose your system and make necessary fixes. Nothing appears on the screen. The computer’s power management system automatically blanks the screen to save power. Press any key to turn the display back on. If pressing a key does not turn the display back on, two things might be the cause: • The brightness level might be too low. Press Fn-^ and Fn-v to adjust the brightness level. • The display device might be set to an external monitor. Press the display toggle hot key Fn-F5 to toggle the display back to the computer. Image is not full-screen. Make sure the resolution is set to a resolution your system supports natively. Right-click on your Windows desktop and select Properties to bring up the Display Properties dialog box. Then click on the Settings TMa550.book Page 78 Wednesday, October 3, 2001 10:57 AM 78 6 Troubleshooting tab to make sure the resolution is set to the appropriate resolution. Resolutions lower than the specified resolution are not full-screen on the computer or on an external monitor. No audio from the computer. Check the following: • The volume may be muted. In Windows, look at the volume control icon on the taskbar. If it is crossed-out, click on the icon and deselect the Mute option. • The volume level may be too low. In Windows, look at the volume control icon on the taskbar. Click on the icon and adjust the level. You can also use the volume control knob on the front panel of the computer to adjust the volume. If headphones, earphones or external speakers are connected to the speaker/headphone-out port on the computer, the internal speakers automatically turn off. External microphone does not work. Check the following: • Make sure the external microphone is connected to the microphone-in jack on the computer. • If you cannot hear playback, the speakers may be muted. How do I eject the optical drive tray with the computer turned off? There is a emergency eject hole on the optical drive. Simply insert the tip of a pen or paperclip and push to eject the optical drive tray. For the location of the emergency eject hole, see “Left view” on page 5. The keyboard does not respond. Try attaching an external PS/2 or USB keyboard to the appropriate port on the computer. If it works, contact your dealer or an authorized service center as the internal keyboard cable may be loose. The floppy drive cannot access a diskette. Check the following: • Make sure the diskette is properly inserted in the floppy drive. • Make sure the diskette is formatted. TMa550.book Page 79 Wednesday, October 3, 2001 10:57 AM 79 • If the diskette is not the cause of the problem, the floppy drive may be dirty. Clean it using a drive cleaning kit. Follow the instructions included with the kit. The CD or DVD drive cannot access a disc. Check the following: • Make sure the disc is supported by the drive. If your computer has a CD-ROM drive, it can read CDs but cannot read DVDs. If your computer has a DVD drive, it can read DVDs in addition to CDs. • When placing the CD or DVD in the drive tray, make sure it is secure in the spindle on the drive tray. • Make sure the CD or DVD is free from scratches or smudges. If the CD or DVD is dirty, clean it using a disc cleaning kit. Remember to follow the instructions included with the kit. • If the problem does not lie with the disc, your CD or DVD drive may be dirty. Clean it using a drive cleaning kit. Follow the instructions included with the kit. The printer does not work. Check the following: • Make sure that the printer is connected to a power outlet and it is turned on. • Depending on your printer connection (USB or parallel), make sure the printer cable is connected securely to the appropriate ports on both the computer and the printer. • If you use a parallel port, access the BIOS Setup Utility by pressing F2 after restarting your system. Go to the Others screen and verify that the parallel port is enabled. See “Others” on page 71. I want to set up my location to use the internal modem. Follow these steps: 1 Click on Start, then click Control Panel. 2 Double-click on Phone and Modem Options. 3 In the Dialing Rules tab, begin setting up your location. Refer to the Windows Help and Support and the modem man...

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