Mac mini randomly reboots, no kernel panic report

[Draft]

I am currently having issues with my Mac Mini (mid-2011) randomly rebooting. This seems to have started since upgrading to Yosemite. The problem is that no kernel panic report is being created and there is no information on these events in the system logs (via console application). I've also tried repairing permissions, repairing the disk, running memtest (from memtestosx.org) and doing a full hardware diagnosis on my Mac, all of which came up empty.

Here is my hardware:

http://www.everymac.com/systems/apple/mac_mini/specs/mac-mini-core-i5-2.5-mid-2011-specs.html

Any ideas on what I should do here? Or how to troubleshoot this further?

Any help here is greatly appreciated.

Thanks,
David

 

[smithrh]

I've had the same happen on my MBP - probably had it happen about 3-4 times.

It hasn't happened on 10.10.3 (yet).

Without logs, well, not much can be done, that's why it's a frustrating occurrence.