These OC settings used to work, now my PC boot loops. Degradation?

Note: ( I did not run these settings 24/7, just occasionally. 24/7 was at 4.00GHz)

i7-980X

NH D15

GTX 1080

No name 24GB 1600MHz

EVGA supernova 750 B2

Motherboard is GAX58A-UD3R Rev 2.0

EDIT: now i cant go back to 4.0.. boot loops