All PC’s but Mac lapotps in particular have a couple of issues related to power and grounding. Get a USB isolator and consider keeping your laptop charger off while listening to music OR move it outside your power conditioner clean area OR get a linear supply.
For the power supply issue, the good news is you can validate if this is an issue or not simply by playing music with/without the laptop charger plugged in. I’d wait until your laptop was down to about ~ 50% charged though. That way the charger is working at it’s hardest and therefore making the most possible noise.
Ironically, if you put your laptop on a different circuit the USB isolator becomes even more important. Well, this depends on the DAC, but sad to say too many modern DACs still don't have galvanic isolation built in.