Pops/Clicks/Noise/Static is a common complaint. If you search through the many posts here you will see you are not alone.
Unfortunately there is no "one fix" for the problem. The first step is to update the drivers for the sound and video, using drivers from the PC vendor, especially the sound as non-Vendor sound drivers many times do not work or work correctly. Wi-Fi is known to cause this, a cell phone or wireless phone close to the PC can cause this. You will have to take it a step at a time and try to fix it.