Asus CM5540 User Manual - Page 15

Troubleshooting This section provides solutions to some common problems which you may encounter when using the ASUS Desktop PC. Contact the ASUS technical support if the problem still exists after you have performed the troubleshooting solutions. What can I do if my Desktop PC cannot be powered on? Check if the power LED on the front panel lights up. It does not light up if no power is supplied to the system. • Check if the power cord is plugged in. • When you use an extension cord or a voltage regulator, check if you have plugged it into a power outlet and switched it on. What can I do if my Desktop PC cannot enter the operating system? • Check if you use the memory modules that the system supports and if you install them properly. • Check if your peripheral devices are compatible with the system. For example, some USB storage devices are with different disk drive structure and enter the sleep mode easily. If the above steps do not solve the problem, contact your retailer or perform system recovery using the supplied Recovery DVD. You will lose all your data during the system recovery. Ensure that you make a backup of it before recovering the system. Why is it that I cannot hear anything from my speakers/ headphones? Check if the volume icon in the Windows® taskbar is set to the Mute mode . If so, double-click this icon to display the volume bar, and then deselect the Mute checkbox to disable the Mute mode . ASUS Essentio Desktop PC 15