PSU Fan making a raging sound
I turned on my PC today, and after a few seconds of pressing the start button, something inside my PC went on a rampage, which sounds like the PSU Fan, it was spinning so fast that i can't really describe it, after a few minutes of keeping the PC on, the sound got higher, and higher, it sounded like it was about to explode, it continued rising, and then just as i thought as it was going to explode, it just went dead silent, and continued running as normal.
The sound stops being very bad at about 5 minutes of the PC running, it gets back to normal about 10-15 Minutes since PC has started.
It's been doing that for 3 days now, any suggestions on what may the reason be, and how it could stop?