Sorry I didn't answer the Q properly. I was up to my neck in my own stuff. LoL.
An old PS might be easy to come by, is far easier to replace, needs no configuration and even if it doesn't solve the problem, I would recommend getting away from 165W!!!
That kind of wattage is very low. Your system may have worked with it for a while, but it would be more likely to blow before the HDD.
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