alpha754293 is right. This version of y-cruncher runs considerably colder compared to LinX. From the top of my head some 5c.

Have you tried clearing CMOS and remove the battery for 15min or so?

My DFI NF4 did the same every time I went on vacation and let it off for a month. The first time was really scary. Somehow, something was getting corrupted when relying on the battery to keep settings for so long.