Troubleshooting
8 - 2 Basic Hints and Tips
8
Basic Hints and Tips
Many of the following may seem obvious but they are often the solution to a problem when your com-
puter appears not to be working.
• Power - Is the computer actually plugged into a working electrical outlet? If plugged into a power
strip, make sure it is actually working. Check the LED Power & Communication Indicators to see
the computer’s power status.
• Connections - Check all the cables to make sure that there are no loose connections anywhere.
• Power Savings - Make sure that the system is not in Hibernate or Sleep mode by pressing the keys
configured in your Power Management/Power Options (see “Configuring the Power Button” on
page 3 - 8), the Fn + F4 key combination, or power button to wake-up the system.
• Brightness - Check the brightness of the screen by pressing the Fn + F8 and F9 keys to adjust the
brightness.
• Display Choice - Press Fn + F7 to make sure the system is not set to “external only” display.
• Boot Drive - Make sure there are no optical media and/or USB storage devices in any connected
drive when you start up your machine (this is a common cause of the message “Invalid system disk
- Replace the disk, and then press any key” / “Remove disks or other media. Press any key to
restart”).
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