Sony PCG-R505 User Manual

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Verify that the computer is plugged into a power source and it is turned on. 

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Verify that the power indicator on the computer is on.

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Verify that the battery pack(s) is inserted properly and is charged.

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The computer may be in LCD (Video) Standby mode. Press any key to 
activate the screen.

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The display mode may be set to external display mode. Press and hold the Fn 
key while pressing the F7 key several times.

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If you are using a USB mouse, verify that the mouse is plugged into the USB 
port. See “Connecting a USB Device” in the online user guide for more 
information.

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If you are still experiencing problems, use your supplied Driver Recovery 
CD (Windows® 2000) or Application Recovery CD (Windows® XP) to 
reinstall the mouse drivers. See “Using Your Recovery CDs” on page 40 for 
more information.

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You may have disabled the touchpad without connecting a mouse to the 
computer. To enable the touchpad:

(Windows XP) Press the Windows key and use the arrow keys to select 
All Programs. Press the Enter key. (Windows 2000) Press the Windows 
key and use the arrow keys to select Programs. Press the Enter key.

Use the arrow keys to select Sony computer Setup, and press the Enter 
key. 

Select Sony Notebook Setup again, and press the Enter key.

Use the arrow keys to select the Touchpad tab.

Press the Tab key to select Enable Touchpad, and then press Enter.