Choose COMPUTER (ANALOG PC) by pressing the COMPUTER button on the remote control unit.
Menu Operation
Press the MENU button to display the On-Screen Menu. Use the Point buttons to select Input and then press the Point or the OK button.
Use the Point buttons to select COMPUTER and then press the OK button.
When COMPUTER is selected, press the Point button to access the submenu items. Use the Point buttons to select the ANALOG PC input source and then press the OK button.
Note:
When the Auto input function is set to On 1 or On 2 in the Auto setup function, the input signal will be searched automatically
buttons to select Input and then press the Point 
or the OK button.