How to know if a Power Supply(SMPS) is failing?

Aromal

Bronze I
Jan 18, 2017
30
1,410
20
I think I have some issues with my 450 power supply of my PC. My Hard disks will frequently turn off and on and I can hear the read/write header scratching the disks at that time. So how can I find if my SMPS is failing?
 

Arjun Chandran

Bronze I
Dec 30, 2016
496
1,685
When my power supply was about to fail i used to hear some click sounds and flashes.Sometimes my PC won't power up at first try.
 

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