smorizio :
first off make sure you have the newest bios for the mb. download hardware info 64 turn on sensor and logging make sure the power supply is staying within atx spec. with new mb and power supply the 12v cpu power conenctor has to be outputting stable 12v or the cpu and pci bus can crash. the first 75w of any gpu comes from those 4/8 pin connector. in the bios under dram speed make sure ram set to xmp profile to rule out a ram to cpu speed issue. from intel download and run there cpu test to see if the cpu is fine. also to rule out bad cpu with bad core or cache turn them off in the bios see if the pc runs without error. also rule out bad ram if you have two sticks of ram try running the pc wiht one and run memtest86 from a boot cd or usb stick to rule out bad ram locking up the pc. the last issue could be a bad vrm or a bad x99 chipset on the mb. if it a chip with a heat issue try running wiht the case side open and a small fan blowing on the mb. if it heat issue from a chip the pc should run fine til lthe fan turned off and the part heats up.
So first i run the test for the CPU ( the one from intel ) and it did not finish ( and i waited like 15 minutes ). Then i updated my motherboard from 1.2 to 1.9 and run again the CPU test. Now the test passed. So to answer to all your tasks :
1.I downloaded the info , but i will leave here a photo with all the voltages of the mb, because i do not know which one you mean
2. it is set to xmp profile
3. now , after the update of the mb bios, the CPU test passed and is all good in the hood
4. "also to rule out bad cpu with bad core or cache turn them off in the bios see if the pc runs without error" -> i do not know how to do this.
5. i had run some time ago a memtest like 3-4 months ago and it was all good
6. As i saw from the results of the hardware info and also i checked 2-3 months ago the temperatures ( with HWMonitor ) the harware is not heating up, so there is no problem with heating.
Well beside no.4 i did everything else ( and also i did not checked for the pins ). Maybe it was the bios the problem, we will see, as i said before it is a random problem, so i have to wait and see if it happens again or not. I will come back with an answer if it happens again. But that no.4 i want to know what you mean.