Sony PCG-R505EL - Manual (Page 191)

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Troubleshooting
This section describes how to solve common problems you may encounter
when using your computer. Many problems have simple solutions, so try
these suggestions before you contact Sony Computing Support
(http://www.sony.com/pcsupport). Consult the following sections:
❑ Troubleshooting Your Computer
❑ Troubleshooting the Docking Station
❑ Troubleshooting the LCD Screen
❑ Troubleshooting the Mouse and Touchpad
❑ Troubleshooting Drives, PC Cards, and Peripheral Devices
❑ Troubleshooting the Software
❑ Troubleshooting i.LINK Devices
❑ Troubleshooting the Modem
❑ Troubleshooting Audio
❑ Troubleshooting Wireless LAN functions
❑ Troubleshooting the Printer