@@danieltenkorang8306 and i think this is not possible in a lot of motherboards without settings the VGA selector resistors ( search youtube for "uma conversion")
Hello I’m repairing an no display also for Lenovo G400 part no. LA 9632P. I followed your voltage checking steps and all the voltage is present even the ram coil and graphic. So jumped to Lcd connector, 3vs_cmos and 3vs is present, only the lcdvdd_conn is not present. I traced back and locate at U72 Vout (lcdvdd_conn) also no voltage 0.00. U72 has input voltage 3vs. Is U72 defective no vout and I don’t know what should be the vout voltage. Can you help me? Or there is a remedy for this? Thanks you.