we'll need way more info... specs, what's the issue, why do you think it's the power supply, etc.

okay, the specs of my pc are these:

CPU: AMD FX6100 w/stock cooler and heatsink
MB: Gigabyte GA-990XA-UD3 (uses 8 pin 12v connector)
RAM: 8GB DDR3 1600 ADATA Premier
GPU: XFX Radeon RX560 4GB (1 6pin connector)
HDD: WD Caviar Blue 1TB + Samsung Spinpoint 2TB
1 DVDRW LG drive
Case Sentey Abaddom II GS-6070 II w/ 6 12cm coolers, 1 14cm and 1 8cm, all with 4 leds per cooler

the psu is a Thermaltake TR2-600 (NON 80PLUS, NON PFC)

i'm yet to test the entire system with a better psu, because most of the tests i've performed are with this psu, or with 2 different psu (with distributed load)

the problems were: under heavy load (gaming, aida64 stability test, overclock) the whole computer shut down. some days after that and after some testing, the psu seems to be unable to be powered on when anything is connected to it.

the tests i've done are these:
i've changed and tested every component as separated, and tested the psu with lower loads and less powerfull systems (less hdd, only the essential to boot and lower specs processors and integrated graphics)
the temperatures for everything were always way below any critical point, just for testing changed thermal compound of most components and nothing changed.
none of the components have failures (except the psu i think), neither the psu suffered any shortcircuit, overvoltage or undervoltage problem.

the psu that i've found were the following:

>Sentey MBP750-HM
>Thermaltake SP-550AH3CCB

i live in argentina and i don't have a lot of money, so the best that ive found are these models. importing a psu is not an option for me.

So I have an example of your exact PSU. From various parts of the internet I came to the conclusion that the non-80plus tr-2 600 is a turd. Bad components all the way around and one person described it as a 400watt continuous 600watt peak PSU. I have had issues with it powering an overclocked Phenom iix6 with a hd6970 2gb card.

yeah, I've noticed that in windows 10 the processor frequency goes up as long as the temperature starts to increase, and the processor temperature never goes upper than 70 degrees Celsius, so the frequency was up to 4.2ghz most of the time. it may be very heavy for this cheap psu.

I've bought this one because i thought it was the 80-plus model, then i realized that it was not that model, way after a year or so.

"Milliways" is fine for posts of this nature.