I do have DS4 support on in steam although it isn't open. I was previously testing if Steam would pick up the controller. I have all of the support options on in Steam, the DS4, Xbox and the last one that i cannot remember the name of.
I have disabled those options and given my PC a restart.
It seems that the computer finds that the device is connected but input mapper just isn't seeing it.
Another strange thing to add; When i try to connect the controller and it fails if i then hit the PS button the light bar goes solid asif it is connected to something but then goes off as usual. Do DS4 pads do this anyway?
I did not. I didn't attempt to use it wired on steam but over bluetooth it just wont have it.
Also when the device is 'Connected' it doesnt show up in my game controllers screen. But when connected on wired it shows up in there as Wireless Controller and as Xbox 360 pad (because of exclusive mode being turned off)