What is the probability that the computer is cut down due to the power supply?

Question

Iron

Good afternoon everyone!
A year and a half ago I assembled a computer:

• Mat. board GIGABYTE GA-990FXA-UD5
  
• Processor AMD FX-8350 OEM (FD8350FRW8KHK)
  
• Video card 4Gb MSI N630GT-MD4GD3
  
• PSU 600 watts. UPD: Case Aerocool V3X Advance Devil Red Edition, ATX, 600W, USB 3.0
  

And from the very beginning, with a prolonged intense load, he began to cut down on me. No BSOD, just cut out. Well, I started measuring the temperature through SpeedFan, the values ​​​​reached 50-54, I tried to set different voltages on the processor in the BIOS, etc. and more than normal and less.
As a result, I installed liquid cooling of the processor, but to no avail.
And lately, it has already started to cut down not only under a serious load and with good external cooling - I put additional fans in the case, the temperature in SpeedFan is already less than 40. I decided that it was time to finish with this and make a spot replacement of a bad component.
What do you think, what is the probability that it is cut down precisely because of the BP? (In addition, I will say that until you turn off the external power, you will not be able to turn on the computer)

Answer 1

"inexpensive" (to put it mildly) case, sorry, and the same PSU, which is cut down from overload. If the PSU does not have an 80 PLUS certificate, at least a bronze one, it is only suitable for an office car. You need to carefully read the descriptions and see how much the PSU really gives.
When choosing a PSU , be sure to pay attention to:
- the actual power output through the 12V line - at best, it will be 0.9 - 0.95 of the declared one, for cheap PSUs it can be noticeably lower
- the current through the 12V line. In cheap PSUs, two "virtual" 12V lines are often made, the current through which does not exceed half of the declared one.
- protection against parasitic power - active or passive. Cheap power supplies are usually equipped with only passive protection, which leads to the appearance of parasitic reactive power, which does nothing useful, but only heats the wires
- the already mentioned 80 PLUS certificate. The presence of a certificate means that the PSU efficiency is not lower than 80%, the higher the level of the certificate, the more efficient (and more expensive)
the PSU is. A good review of the Aerocool 400W PSU .

Answer 2

I had the same problem, after replacing the PSU, the problem disappeared.
So there's a 90% chance it's BP.

Answer 3

What do you think, what is the probability that it is cut down precisely because of the BP? (In addition, I will say that until you turn off the external power, you will not be able to turn on the computer)

It was necessary to start with this - overload protection works in the PSU.
PSU or repair, or change, or change to a more powerful one - the problem will go away.

Answer 4

90%