Noise with a Sennheiser e825s

Always go through a mixing console! Then the mixing console to the PC!
P.S.: while listening, you still have a grounding problem! Either it comes from the microphone or the PC! Try pulling out the mic jack a little to see if it still happens! Because for me, it's a bad ground! So you definitely won't need a mixing console. I should have listened to the links before writing!
If you have another microphone, a basic one, just try it!

The Sennheiser is already an awesome microphone!! ^^

Yes, I just tested moving the jack and it's the same! I already have a small mixer, I'll test and see if it still happens!

Because 4 - 5 years ago, I was doing pirate radio (not good!! lol) and I was already using this microphone connected to a mixer and I never had this issue!

I will still test it with my Sony F-V620!

P.S.: what should I do if it's a grounding issue?

So: I have 3 different cables and I tried them all! It's always the same! Now I removed the mic from the mic input and plugged it into the line input! The problem now is that the sound is weak and if I increase it digitally, it gets noisy!

The problem is almost solved but where does the issue with the mic input come from?

I don't want to come across as an idiot, but I can't find it... ^^