After some researches and thinking. I think I might have worsened the problem by turning smart fan off from the Bios which initially lead to a really unbearable level. I think the noise which sounds like some king of failing fan is actually ''coil whine'', for now it's gone. So for now the apocalypse is delayed but it's still way too much decibels for me to use the computer for relaxing gaming sessions so... As far I know, it doesn't void the warranty to replace the PSU as long as : This modification doesn't cause any issue or damage (a PSU with the exact same specifications would be preferable to be safe and it would still open the door to voiding the warranty to the whole unit if something related to power supply happens). The warranty will not cover the new PSU and in case of issue the computer would need to be sent back with the old PSU in order for the technical service to accept working on it. But I have no idea how PSU works, I bet they are pretty standard. From what I gathered this one is this model ''Power supply InWin B65E 650W'' for which I can't find any information. I assume it's a (very cheap) custom model for Medion and I would be happy to have more infos on that.
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