Persistent Computer Restarts: Troubleshooting Intel i5-2500k, Gigabyte GTX1060, OCZ 600W PSU

Hello
I have an urgent problem with my computer.
Apparently everything works, but numerous restarts happen for a reason.
I thought maybe it was the fault of the disks, so I reinstalled - once the SSD drive, once the HDD, once only with one, only with the other, but this is apparently not their fault, because the restarts happened.
I recently gave the computer for service and they replaced the motherboard with a new one - initially the power supply was supposed to be bad, but it turned out that the motherboard is bad.
What could be the problem? I don't want to add more money.
My Specifications:
Power supply: OCZ 600W StealthXStream
Housing: SilentiumPC Brutus (three windmills now)
RAM memory: 8GB DD3 GoodRam (two dice 4GB each)
Processor: Intel i5-2500k 3.30GHz
Cooling: Grandis 2
Graf card: gigabyte gtx1060 6GB G1 Gaming
SSD and HDD
Initially, I thought it was under load (installation), but probably randomly, because it can shoot a reset in totally odd moments.
My current motherboard bought by them and inserted is ASUS P8B WS 1155 BOX XEON WORKSTATION C206
The cables are rather well connected, because I checked several times, I also tried resetting through the batteries.
I thought it might be the bone's fault, but it still resets (turned on once with one time, the other) - as soon as it starts, most is endless - it resets until the blue screen appears and selection - advanced options | restart

There may be a lack of power in the power supply, can the bones of the frame be broken?
The power supply and the bones have been working for me 5 years like (like the processor and hdd anyway) .. could this be the end of any of them?

Check the dice for bootable memtest86.
Processor and power supply only by replacement
Give the screen with HWiNFO sensor only done after 15 minutes of the power supply test in OCCT.

The BIOS resets with the jumper - in ASUS I suspect you need to set it from normal to reset for 15s on a PC cut off from power supply but check the instructions.

I did tests at OCCT.
I will paste the links below. CPU went normal, no problem. The GPU is also rather ok - only after a short time cputin message popped above the maximum value.
On the other hand, with Power supply - at the very end of the 15 minutes the computer has reset - the same screens do not have.
Generally, after each restart there is an event log in the critical tab - Kernel-Power.

Here are screenshots from HWinfo


SpeedFan


OCCT from idle - what it looks like when I just run the program


And screenshots from OCCT tests (I don't know which ones to show - I put everything in)
CPU:





GPU - aborted:





I don't know much about such things and I have no idea what the herald is that the power supply or something else is not working properly - that's why I rely on your help completely.
I checked the RAM bones (one by one) with the Memtest86 program - they showed that they are good.
And as for the integrated graphics - I worked on it for a while, but also dumped restarts.

I would try to borrow a reliable power supply and check.
Although you may be "lucky" one in 1,000,000 which has broken down a processor, a lot of problems also occur on the integrated circuit.
A critical event means nothing. It arises whenever you start the PC without first closing it correctly. That is in the case of BS, button reset, power failure as well as other types of reset and incorrect shutdown of the system. It's worthless information.

Long been on this site? Do you know that when they are repaired and the fault persists you have the right to request a refund or further repair for the price? If it is the same after replacing the disc, then the disc was probably good ... You should go to this site to describe the situations and if something is wrong they sing then boil over to them. Matchstick men must be harassed.

Exactly as you write - they should solve the price problem - in the end they declared themselves to work when I received it.

I went, I presented how everything is - I did as many things as I could do - they have to say tomorrow how to pick up a tin.
Let nothing serious, and at most a power supply.

And may it remain, because of a small tuning of the computer came out that I could buy consoles.

@ 310artur, do you think I can confidently request a refund? Let me talk to the computer myself or give them to take their CD, which they ordered and put on. Let's hope that only from the act of some anger do not damage other components ..
I thought it was already difficult with this and I would do the best when I sell a processor, framework and possibly a power supply and buying something new and current for today - where the choice of motherboards and processors is a lot than playing with it all.

Don't do it after anger. Get along - such times that no website wants to have bad advertising - and there is no worse way than to bothered the job and pluck the customer.
What selling - what who likes what who does on the PC. Mine is much more ancient and old. If you have enough, why change? New also sometimes breaks ...

You are right here.
The worst thing was that it was supposed to be a small upgrade to emphasize the processor and it was going crazy like a computer (then the computer would catch up with tops), and it was unclear what the stress was, or if this is not the end of stupid expenses.
Service, where after a telephone conversation I left them again, the computer did not speak today, so probably something thicker is cut ... maybe, however, a faulty disc and they will advertise.
I guess I lack patience, that's all.

But thanks a lot for your help, I will write something in case of doubt.