diff --git a/power-control-x86/src/power_control.cpp b/power-control-x86/src/power_control.cpp
index 90e8789..6f77d52 100644
--- a/power-control-x86/src/power_control.cpp
+++ b/power-control-x86/src/power_control.cpp
@@ -1592,6 +1592,12 @@
         case Event::warmResetDetected:
             setPowerState(PowerState::on);
             break;
+        case Event::psPowerOKDeAssert:
+            warmResetCheckTimer.cancel();
+            setPowerState(PowerState::off);
+            // DC power is unexpectedly lost, beep
+            beep(beepPowerFail);
+            break;
         default:
             std::cerr << "No action taken.\n";
             break;