naur6773 :
i OC ed with radeon settings it is called global wattman or somethinf like that
Next time use MSI Afterburner. You have three ways to fix it:
1. Take out GPU > Use onboard graphics if it has one > Reset OC or delete wattman
2. Safe mode > Reset OC or delete wattman
3. Plug your boot drive to another computer > Delete wattman