diff --git a/source/frontends/sdl/imgui/sdlsettings.cpp b/source/frontends/sdl/imgui/sdlsettings.cpp
index e683f842..341421da 100644
--- a/source/frontends/sdl/imgui/sdlsettings.cpp
+++ b/source/frontends/sdl/imgui/sdlsettings.cpp
@@ -235,10 +235,19 @@ namespace sa2
 
           ImGui::Separator();
 
+          if (frame->HardwareChanged())
+          {
+            ImGui::PushStyleColor(ImGuiCol_Button, (ImVec4)ImColor(180, 0, 0));
+          }
+          else
+          {
+            ImGui::PushStyleColor(ImGuiCol_Button, (ImVec4)ImColor(0, 180, 0));
+          }
           if (ImGui::Button("Restart"))
           {
             frame->Restart();
           }
+          ImGui::PopStyleColor(1);
 
           ImGui::SameLine();
           if (ImGui::Button("ResetMachineState"))
diff --git a/source/frontends/sdl/processfile.cpp b/source/frontends/sdl/processfile.cpp
index abc279a4..50d8e595 100644
--- a/source/frontends/sdl/processfile.cpp
+++ b/source/frontends/sdl/processfile.cpp
@@ -89,6 +89,7 @@ namespace sa2
     if (strlen(filename) > strlen(yaml) && !strcmp(filename + strlen(filename) - strlen(yaml), yaml))
     {
       common2::setSnapshotFilename(filename, true);
+      frame->ResetHardware();
     }
     else if (strlen(filename) > strlen(wav) && !strcmp(filename + strlen(filename) - strlen(wav), wav))
     {
diff --git a/source/frontends/sdl/sdlframe.cpp b/source/frontends/sdl/sdlframe.cpp
index 0c5f7795..3083d6f0 100644
--- a/source/frontends/sdl/sdlframe.cpp
+++ b/source/frontends/sdl/sdlframe.cpp
@@ -152,6 +152,7 @@ namespace sa2
     CommonFrame::Initialize();
     mySpeed.reset();
     setGLSwapInterval(myTargetGLSwap);
+    ResetHardware();
   }
 
   void SDLFrame::FrameRefreshStatus(int drawflags)
@@ -388,6 +389,7 @@ namespace sa2
         {
           Snapshot_LoadState();
           mySpeed.reset();
+          ResetHardware();
           break;
         }
       case SDLK_F11:
@@ -698,6 +700,17 @@ namespace sa2
     Execute(0);
   }
 
+  void SDLFrame::ResetHardware()
+  {
+    myHardwareConfig = CConfigNeedingRestart(GetPropertySheet().GetTheFreezesF8Rom());
+  }
+
+  bool SDLFrame::HardwareChanged() const
+  {
+    const CConfigNeedingRestart currentConfig(GetPropertySheet().GetTheFreezesF8Rom());
+    return myHardwareConfig != currentConfig;
+  }
+
 }
 
 void SingleStep(bool /* bReinit */)
diff --git a/source/frontends/sdl/sdlframe.h b/source/frontends/sdl/sdlframe.h
index 57281df7..33ef3ea6 100644
--- a/source/frontends/sdl/sdlframe.h
+++ b/source/frontends/sdl/sdlframe.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "Common.h"
+#include "Configuration/Config.h"
 #include "frontends/common2/commonframe.h"
 #include "frontends/common2/speed.h"
 #include <SDL.h>
@@ -29,6 +30,8 @@ namespace sa2
     void ExecuteOneFrame(const size_t msNextFrame);
     void ChangeMode(const AppMode_e mode);
     void SingleStep();
+    void ResetHardware();
+    bool HardwareChanged() const;
     virtual void ResetSpeed();
 
     const std::shared_ptr<SDL_Window> & GetWindow() const;
@@ -73,6 +76,8 @@ namespace sa2
     common2::Speed mySpeed;
 
     std::shared_ptr<SDL_Window> myWindow;
+
+    CConfigNeedingRestart myHardwareConfig;
   };
 
 }