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Was working 100%. Now only turns on for a second before losing power /or shutting down

Feb 3, 2019
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My computer was working great then this started!

https://imgur.com/gallery/19az9Gp

https://imgur.com/gallery/bfKyA5K

https://imgur.com/gallery/I3YzC6C




Could be:

CPU plug ins?
Plastic left on the cooler? (no signs of over heating everything was under 30 )
Faulty Power Supply since I bought it refurbished from Corsair?
Cords to tight?

JUST WONDERING WHERE I SHOULD START!!



MY BUILD LIST:

CPU
Intel - Core i7-9700K 3.6 GHz 8-Core Processor

CPU Cooler
Corsair - H100i PRO 75 CFM Liquid CPU Cooler

Motherboard
Gigabyte - Z390 AORUS PRO WIFI ATX LGA1151 Motherboard

Memory
Corsair - Vengeance RGB Pro 64 GB (4 x 16 GB) DDR4-3200 Memory

Storage
Samsung - 970 Evo 1 TB M.2-2280 Solid State Drive
$0.00

Video Card
Zotac - GeForce RTX 2080 Ti 11 GB GAMING AMP Video Card

Case
Corsair - Obsidian Series 500D ATX Mid Tower Case

Power Supply
Corsair - AX760I - REFURBISHED

Operating System
Microsoft - Windows 10 Pro OEM 64-bit



It just started working after fiddling with the Sata cord the CPU COOLER was plugged in. see how long it lasts. Does it matter if i have my CPU Cooler and all my fans plugged into 1 Sata Cord!
 
Just because power is partially supplied to mainboard, does not mean all voltages are correct, or, stay within spec with a decent start-up load...

YOu can try disconnecting all drives and USB headers to rule out a short, and, drop down to a single stick of RAM, and, remove GPU as well....; if condition persists, the PSU is the certainly where I'd start. (Most power supplies that suddenly fail were in fact 'working fine' the day before!) :)
 

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