Can OC be reset automatically?

Furious5k

Distinguished
Feb 15, 2007
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I've had a few problems with my PC, mainly a few shut downs while playing games. Since then I've been trying to find the culprit, but both FurMark and Prime95 didn't crash my PC, which is weird. However, unless I'm halucinating, my CPU speed has been reset to stock somehow. Can a motherboard do this as some kind of fail-safe?