Solution:

To lite up 800 x 600 18bit TFT LCD. such as SANYO MXS121022010 . You need to do two important things. 1. Change the LCD panel type from CMOS setting. 2. Get the LCD connection table. First power on your system and press "Del" to enter in the CMOS setting. Form CMOS stting choose "Integrated Peripherals" item and then choose 800 x 600 LCD panel from the item " Flat panel resolution". Then save the configuration (CMOS). Secondly, Please make a LCD cable as shown following. The back light of the LCD panel should be drive by the " Invertor". Some of the LCD come with invertor but some does not. Normally the input voltage of the invertor is DC 12V or 5V. The outpur voltage of the invertor ranges AC 500 to 1500 V. Please check the data sheet of the invertor and LCD back light information befor you use it.