Connect the PS4 controller to your PC with a USB cable
Or pair it via Bluetooth by holding Share and PS until the light bar flashes
Open Windows Bluetooth settings
Select Add Bluetooth or other device
Choose Bluetooth
Select Wireless Controller
Install DS4Windows if you want better compatibility with more games
Download and run DS4Windows
Follow the setup prompts to install required drivers
Configure controller profiles in DS4Windows if needed
Launch your game and select controller input if the game requires it
Use Steam Big Picture Mode if you want to configure the controller through Steam
Open Steam settings
Go to Controller settings
Enable PlayStation controller support
Calibrate or remap buttons if needed