We have an older X6DH8-XG2 that will not post. It does get the memory beep code when memory is removed. The memory tests are ok in another system. Is there any other test we can try?
Please unplug the AC power. Change the JPG1 jumper to pins 2 and 3. Then connect power and turn on. You will hear no video beep code. Unplug the system again, but this time move the JPG1 jumper back to pins 1, 2. Reconnect power and make sure your memory is installed. This time you should get video post back.