Ps4 controller no longer connect to PC?

I now use my Ps4 Dual Shock 4 Controller for my PC, recently they just went off and since today they only connect briefly to the PC via Bluetooth (without adapter) and then switch off again immediately, the problem does not solve the problem Socket, it stays the same.

Here is the description of the action of the controller: 3 times light blue lights then it lights up really blue once (on the computer comes the message Connected) but it goes off again immediately.

The controllers are the only ones I have at home, it would be really nice if someone out there could help me. LG

You have to disable the speaker from the controller

And how do i do that?

System tray speaker symbol then everything is simple