Ever since yesterday, my computer has been making a grinding noise when under load and occasionally at random times. The PSU is a CoolerMaster Elite 460W. I know it's coming from the PSU cause the sound continued even when I unplugged the CPU fan and my other case fan. It's been around 2 years since I got this PSU. I know it isn't the "best". Is there a away I can fix this without opening the PSU itself?