Question PC crashes -> Blackscreen! Why?

[GuitarDude31]

Hello!

My PC crashes very often. It results every time in a black-screen.
It often crashes, if I do a user input (mouse, keyboard or USB change).
Oddly it does not crash for example., if it runs 6 hours and I let the PC run without working with it (idle mode)

The following things I checked:

• MemTest with RAM over 5 hours (no errors)
• SSD with Samsung Magican (status: good) and different SSDs
• different Operating-Systems (Windows 10 , Ubuntntu, MX Linux)
• GPU stress test (no errors)
• current BIOS
• CPU Temp under full load: 50-70 °C

My Hardware:

• MSI B360-A Pro
• 2x 16GB Corsair Vengeance DDR4 DRAM 3000 MHz rot
• Intel Core i5-8600K CPU, 6x 3.60GHz
• Gainward GeForce GTX 1060 Grafikkarte 6GB GDDR5
• Samsung 500GB SSD 850 EVO Series
• be quiet! Pure Power 10 | 500W CM
• be quiet! PURE BASE 600
• Arctic Freezer 11 LP CPU-Cooler

These error logs I got from Windows 10 (sorry I translated these into English):

• (ID 7000) The service "SSPORT" couldn't be started because of a error)
• (ID 46) volmgr (The initialition of the core image failed)
• (ID 41) Kernel Power

Why does my PC crash?

 

[Finstar]

User input related crashes would leave me to believe it's a broken motherboard.
The way it crashes and not crashing on idle however seems more PSU related.
I'd start by having those 2 tested.

 

[GuitarDude31]

How could i test, if it would be the Mainboard?

 

[GuitarDude31]

I changed the keyboard - now it seems stable 😵.
// edit: crashed again 🙁 🙁