Step1: first erect the riser, and well fix the bottom of the riser. Then remove the fixed plastic part behind the display, remove all the fixed screws, and then remove the back cover.
Step 2: Unscrew the fixing screw that fixes the display, unplug the communication cable connected to the display, and take off the display.
Step 3: Replace the new display and fix all the screws, then plug in the communication cable, and finally cover the back plastic part, and fix the back plastic part with screws.