Thank you for posting your query in Microsoft Community. As you have mentioned that you have tried connecting Ethernet cable but didn't help, I suggest you to try connecting through the USB cable and check. You can also use the cable which comes along with PS3 and connect it to your laptop to play games from your PS3.
PS3: Media Server / DLNA - PlayStation If using a wireless network, make sure your computer and the PS3™ can connect to your wireless router. Make sure you are using a 802.11b or 802.11g compatible router (802.11n is not supported by the PS3™; however, 802.11n routers will work as they are generally compatible with 802.11b and 802.11g). How to Connect PS3 Controller to Mac (with Pictures) - wikiHow May 19, 2019
Jun 01, 2011
In this tutorial, find out how to easily connect a PS 3 controller to your PC. You can controll the mouse, keyboard with just this one controller. It's easy to do and makes it a whole lot better for your hands and for your sanity. The controller can even be configured to play emulators on your computer as well. Enjoy! Connect PS3 With AV Cable - PlayStation Updated system software installed on your PS3. Visit PS3 System Software Update to download and install the most recent version. AV or "Input" channel on your TV. You need to know the AV or "Input" channel on your TV in order to receive video and audio from the AV Cable connections. Please refer to the TV instruction manual for more information.
PS3: Media Server / DLNA - PlayStation
PS3 via Bluetooth or Mini USB cable Setup: *** Please ensure that your computer is fully up to date with the latest drivers including controller drivers. ***If you don’t already have one, you'll need a Mini USB cable to connect to the computer, or your computer will How to Connect a PS3 Controller on PC [Simple Guide] Nov 26, 2019 How would you connect a playstation 3 to the computer Nov 30, 2007