Question Tried 3rd PSU, still have restarting problem

Nov 18, 2020
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Hello there,

My computer became a PSU graveyard.
Current setup:
  • Samsung 970 EVO 250GB M.2 - Solid state drive
  • Intel Core i5 8400 - Processor
  • Corsair Vengeance LPX - 16 GB RAM
  • Sapphire PULSE RX 5600 XT 6G GDDR6
  • Cooler Master MasterBox Q300L - Minitowermodel
  • MSI Z370M GAMING PRO AC - Motherboard
  • EVGA Supernova 550 G2
To summarize, I was using my computer without a problem. Around 3 months ago, I've bought a new WD HDD. (might be a coincidence) The Computer started restarting itself.

1st PSU dies.
Details:

Brought to an awful technical service,
changed CPU fan to Cooler Master MasterLiquid ml120
changed GPU from MSI GTX 1060 6GT OCV1 to Sapphire PULSE RX 5600 XT 6G GDDR6

It was still restarting, I used a friend's PSU and it worked so I bought a new PSU which is Corsair RM750x.
I installed it and it was working properly. I started a download and went to bed.
In the morning power was blinking.

2nd PSU dies.
Details:

I opened RMA to EVGA for old PSU, they sent me a new one which looks like it is used (probably refurbished)
It was worked properly for around 2 weeks. Now that one is also started restarting the computer. Also fails OCCT tests.

3rd PSU dies.

What is your opinion about this?
 

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