The occasional "click" or other anomaly can be any number of things. It could be some sort of noise coming through your house electrical system (such as a light being turned on/off, appliance noise, etc), an internal pc noise, etc. Recently I was being driven batty by some weird noises that appeared first in my monitors, then my subs. It ended up being the UPS they were plugged into, only if they were plugged into the battery backup outlets.
Things I would try:
1. One easy check, unplug your laptop from the charger. If the noise goes away, and your laptop has a 3 prong AC plug, try a cheapo 2-prong adapter. This can cure many ground loop related noise issues, and I consider it an acceptable laptop power solution (may not be safe for some other 120V powered devices). Same goes for your laptop speakers if powered.
2. Check all of the power settings in Control Panel, make sure everything is "high performance", do not sleep, USB buss stays on (if using a USB DAC), etc. Windows 10 drives everyone crazy. Make sure Windows isn't trying to update, if so, let it do so.
3. You didn't mention if the laptop is connected to anything else, such as a TV, receiver, etc. If so, disconnect all until the noise source is determined.
Hope this helps.