Lenovo IdeaPad 5-14ALC05: Accessing the internals

What you need

Make sure that your laptop is turned completely off. If it is turned off, the LED on the power button should not be lit. If it is lit, press and hold on the button until it turns off.
Using a T5 screwdriver, remove the 5 screws at the top of the case (circled in red in the picture).
Remove the 4 screws at the bottom of the case (circled in orange in the picture), but make sure to separate them from the other screws. They are different lengths, so mixing them up during reassembly could mess up your laptop.
Using picks or your thumbnail, unclip the plastic clips holding on the bottom of the case. When it is detached, it should come off easily, so don't force it.