Dell G3 3590 Service Manual page 54

6 Install the touchpad.
7 Install the I/O board.
8 Install the hard drive.
9 Install the solid-state drive/Intel Optane memory
10 Install the right fan.
11 Install the left fan.
12 Install the WLAN card.
13 Install the memory modules.
14 Install the battery.
15 Install the base cover.
16 Follow the procedure in
54 Removing and installing components
module.
After working inside your computer.