We are going to move/remove the RAM to see if that is causing it not to display.
Circled in YELLOW is where the RAM in located:
- Located at the top and bottom of the RAM sticks are TABS holding it in place (Example circled in RED)
- Press down on the tabs on both ends to release the RAM.
- Remove the RAM, and place it into the other slot(s)
- When reinserting the RAM, make sure the tabs at the top and bottom are open, and align the slit on the RAM with the slot.
- Press the RAM firmly. The tabs will close and click when it is secure.
- Turn on the PC to see if it displays.
- Make sure to try all the available slots.