A month ago I built a new computer with H270 chipset and Intel Core i7-7700 CPU. I made sure to handle all components in an ESD safe way. After the build was completed Void Linux was installed. I then stress tested the system with Prime95 and MemTest86. No errors was reported during testing and the system did not crash or became unstable. After the initial testing I did not use the system much, I would log on to update the system and a few times to browse the web and watch YouTube videos, but it would mostly idle.
Yesterday I tried to login via SSH after not having used the system for two days, but I was unable to connect so I tried to login using the console instead, but I was unable to get any output on the monitor and the Num Lock/Caps Lock/Scroll Lock LEDs did not respond to key presses, so the only thing I could do was a hard power off. The system booted fine and has been running since.
Logging was not activated so I have absolutely no idea what happened. The only thing I know is that the system was idle and Xorg was not running during the crash.
My biggest worry is that the crash was caused by a hardware problem, especially since the system was doing nothing when the crash happened. I don't want to replace my current system with a unstable one as I'm pretty dependant on a working computer.
What is your opinion on this? What would you do in this case? Could this simply be a software bug that I don't need to worry about, or does it sound more like a hardware problem?