Question Buzzing coming from keyboard and speakers

[MLLG]

Hi,
So I recently moved my pc to a new case (Eclipse P300) and got a new keyboard (Hermes P2). After I moved and tried lowering my fans' speed, keyboard, PSU and speakers started buzzing and squeaking really loud. After I switched the sata cables the buzzing got quieter but still remained. I have some nameless akyga PSU and planned to upgrade it anyways so I'm just curious do you think getting a corsair, be quiet, cm or some other PSU will solve the issue I'm having. I can attach the sound file if needed.
Thanks in advance.

 

[tshinhar]

This is caused by electrical interferences, it may very well be the psu that causing it
So yeah it will probably solve the problem
(and even if not you really should not use psus from unknown brand as they can damage your components)

 

[MLLG]

Thank you, that's all I needed to hear. Regarding the PSU, I was on a really tight budget, you know how it goes...
I've got around 50-ish dollars, should I buy right away or wait for Black Friday and which 500W PSU would you recommend?