Check connection in the Controllers tab.Download DS4Windows (opens in new tab) and extract.For Windows 7, get Xbox 360 controller driver (opens in new tab).(opens in new tab) How to install DS4Windows for non-steam gaming From here you can register it to your account, so it will remember the settings on any PC you log into. Under the Controller tab, open General Controller Settings you should see your controller listed under Detected Controllers. Once connected, navigate to Steam's settings menu-under the top left dropdown-to get everything running smoothly. Otherwise, try using a USB 2.0 port instead of a USB 3.0 port.

If you run into any connection issues, closing and reopening Steam should do the trick. Just be sure to pair or plug in your controller before opening Steam or any Steam games, or else your controller may not be recognized (click the link to jump down to the Bluetooth section of this guide). Thanks to official Steam support, there's almost no setup involved in getting your PS4 controller working in Steam.

Remap from Settings Controller tab/in game.

(opens in new tab) Using a PS4 controller in Steam

Use ps4 controller on steam link