Power Supply Help

May 18, 2018
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Hello, someone on here linked me to this power supply: Seasonic FOCUS Plus Series SSR-550FX 550W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan Compact 140 mm Size Power Supply https://www.amazon.com/dp/B073GY89G5?ref=yo_pop_ma_swf
I instantly bought it for my 1070ti, hoping it would work. Well, ever since I installed it, everything has went wrong. My computer has refused to turn on and I've been computer-less for the past week. I've tried replacing PSUs, CPUs, Motherboards, and even Cases, hoping to find out what the silent killer was. I even took it to a PC Repair shop and no one could tell me what was wrong. My only thought is that I somehow fried both motherboards as I know for a fact the PSU works, just it may not work correctly. My question is: is there a chance my PSU fried my motherboards? The motherboards were a Gigabyte GA-78LMT-USB3 and a Gigabyte GA-970A-D3. I'd tell you what my processors were but all I know is i5. I have no working computer to even see what it is. I had 24 GB of DDR3 RAM and the computer case itself had 3 internal fans, it was the XPS 630i and the other was a crappy case so I don't really care much about the watts it required. Also, on top of the first questions, does anyone know of a way to check/change the voltage on that specific PSU? I did a 360 degree check on it and didn't find a single spot as to where I could change or see it.
Thanks in advance
 


I'm not sure. I can't check my parts because i have no working computer. I honestly don't know what CPU I had. Id look up the info on it by looking at it, but whatever was on the front of it is very faded