I've been running a raspberry pi 3 with Fedora release 25 (Twenty Five) using kernal 4.9.6-200.fc25.armv7hl, and I have been noticing for the last 2 weeks that my Pi locks up. I tried hooking it up to an HDMI monitor, and USB keyboard to see if the system generates any message, but I only get a blank screen and no reaction from the keyboard. I have looked at the /var/log/message, and dmesg, and I don't see anything that could be causing the problem. I was thinking it could be overheating, but Fedara 25 does not support any of the rasbian commands to run heat sensor checks. 

Any ideas?

Thanks,

Rafael