Audio PC

It is very important they are built specifically for the purpose of getting AC from the outlet to the component. Other than that there is no such thing as power cord for this, power cord for that.   

Each and every component generates its own noise. Never fear, the whole system is immersed in a sea of noise. The little bit generated by components is definitely worth considering but frankly the least of your problems. That is a main reason why power cords work in the first place.   

Therefore, it is pointless to waste time trying to figure out what noise is coming from where. Forget all that, just deal with the fact noise is everywhere.  

Would you hire an electrician to operate a screwdriver? Can you operate a screwdriver? No? If no then you can pay me $100 and I will show you how. Then once you know which end goes in the slot and which direction to turn the screws you go to the breaker panel flip the power off and swap your outlet. Take you about 5 minutes.

“Is it very expensive to hire an electrician to install audio friendly outlets in your home/studio?”

I wouldn’t hire electrician for changing out an outlet. Watch this video, if you still need help, PM me and I can walk you through over a video chat.

https://youtu.be/B16l7RurJuQ

“Is cross talk between PC parts common in terms of creating noise that will be audible through monitors or headphones.”

I wouldn’t worry too much about the internal noise in a PC, they are not designed for optimal audio output in first place. If you want to still use PC as your primary source for audio, try AQ Dragonfly or JitterBug.
https://www.audioquest.com/streaming-computer-audio

Hope this helps!

The big issues tend to be the PC's power supply injects a lot of noise into the AC line, and ground loop noise over the USB connector.

Best,

Erik