Index: /trunk/src/VBox/Runtime/r0drv/nt/mp-r0drv-nt.cpp
===================================================================
--- /trunk/src/VBox/Runtime/r0drv/nt/mp-r0drv-nt.cpp	(revision 23860)
+++ /trunk/src/VBox/Runtime/r0drv/nt/mp-r0drv-nt.cpp	(revision 23861)
@@ -418,4 +418,7 @@
 void rtMpPokeCpuClear()
 {
+    if (!fPokeDPCsInitialized)
+        return;
+
     RTCPUID idCpu = RTMpCpuId();