I have an Intel Graphics and AMD Radeon R5 M330 GPUs on my lenovo laptop. Recently, I have noticed that in the task manager my laptop is using only intel gpu, so i was trying to read how to solve it, but most of the threads are just unfinished or don't have the solution. Even after i disabled intel gpu in my device manager, amd gpu is still on 0% and every game is crashing.
But it is always best to use Lenovo's Laptop Graphics Drivers since they are 100% compatible and uses all the features of your laptop.
NOTE: Your Intel Integrated Graphics drivers and CHIPSET must be the latest for the AMD Driver to work correctly.
See if there are any new BIOS for your laptop besides the one you have installed.
NOTE: amdmatt mentions that headless Graphic cards (no outputs) do work automatically in switchable Laptops. I forgot how AMDMATT explained how you can actually tell if the laptop is using switchable graphics on it or not.