diff --git a/panda/src/windisplay/Sources.pp b/panda/src/windisplay/Sources.pp
index 5b6fd6462b..a7a1d2f849 100644
--- a/panda/src/windisplay/Sources.pp
+++ b/panda/src/windisplay/Sources.pp
@@ -13,7 +13,7 @@
   #define LOCAL_LIBS \
     display putil
     
-  #define COMBINED_SOURCES $[TARGET]_composite1.cxx winDetectDx9.cxx winDetectDx8.cxx winDetectDx7.cxx
+  #define COMBINED_SOURCES $[TARGET]_composite1.cxx winDetectDx9.cxx winDetectDx8.cxx
 
   #define SOURCES \
      config_windisplay.h \
@@ -30,7 +30,7 @@
   #define INCLUDED_SOURCES \
      config_windisplay.cxx winGraphicsPipe.cxx \
      winGraphicsWindow.cxx \
-     winDetectDx9.cxx winDetectDx8.cxx winDetectDx7.cxx
+     winDetectDx9.cxx winDetectDx8.cxx
 
   #define WIN_SYS_LIBS Imm32.lib winmm.lib kernel32.lib oldnames.lib user32.lib gdi32.lib
 
diff --git a/panda/src/windisplay/winDetectDx7.cxx b/panda/src/windisplay/winDetectDx7.cxx
deleted file mode 100644
index 2434393453..0000000000
--- a/panda/src/windisplay/winDetectDx7.cxx
+++ /dev/null
@@ -1,79 +0,0 @@
-// Filename: winDetectDx7.h
-// Created by:  aignacio (18Jan07)
-//
-////////////////////////////////////////////////////////////////////
-//
-// PANDA 3D SOFTWARE
-// Copyright (c) 2001 - 2007, Disney Enterprises, Inc.  All rights 
-// reserved.
-//
-// All use of this software is subject to the terms of the Panda 3d
-// Software license.  You should have received a copy of this license
-// along with this source code; you will also find a current copy of
-// the license at http://etc.cmu.edu/panda3d/docs/license/ .
-//
-// To contact the maintainers of this program write to
-// panda3d-general@lists.sourceforge.net .
-//
-////////////////////////////////////////////////////////////////////
-
-#include "pandabase.h"
-
-#if HAVE_DX
-
-#include <ddraw.h>
-
-#include "graphicsStateGuardian.h"
-#include "graphicsPipe.h"
-#include "displaySearchParameters.h"
-
-
-typedef HRESULT (WINAPI *DIRECTDRAWCREATEEX) (GUID FAR * lpGuid, LPVOID *lplpDD, REFIID iid, IUnknown FAR *pUnkOuter);
-
-static GUID REFIID_IDirectDraw7 = { 0x15e65ec0, 0x3b9c, 0x11d2, 0xb9, 0x2f, 0x00, 0x60, 0x97, 0x97, 0xea, 0x5b };
-
-int dx7_display_information (DisplaySearchParameters &display_search_parameters, DisplayInformation *display_information) {
-  int debug = false;
-  int state;
-  
-  HMODULE ddraw_dll;
-  LPDIRECTDRAW7 direct_draw;
-  DDSCAPS2 dds_caps; 
-  DWORD total_video_memory; 
-  DWORD free_video_memory;
-  HRESULT hr; 
-
-  state = false;
-  ddraw_dll = LoadLibrary ("ddraw.dll");
-  if (ddraw_dll) {
-    DIRECTDRAWCREATEEX DirectDrawCreateEx;
-
-    DirectDrawCreateEx = (DIRECTDRAWCREATEEX) GetProcAddress (ddraw_dll, "DirectDrawCreateEx");
-    if (DirectDrawCreateEx) {
-      hr = DirectDrawCreateEx (NULL, (LPVOID *) &direct_draw, REFIID_IDirectDraw7, NULL); 
-      if (hr == DD_OK) { 
-        hr = direct_draw -> QueryInterface (REFIID_IDirectDraw7, (LPVOID *)&direct_draw); 
-        if (hr == DD_OK) {
-          ZeroMemory (&dds_caps, sizeof (DDSCAPS2));
-          dds_caps.dwCaps = DDSCAPS_VIDEOMEMORY | DDSCAPS_LOCALVIDMEM;
-          hr = direct_draw -> GetAvailableVidMem (&dds_caps, &total_video_memory, &free_video_memory); 
-          if (hr == DD_OK) {
-            display_information -> _video_memory = total_video_memory;
-            if (debug) {
-              printf ("video_memory %d \n", total_video_memory);
-            }
-            
-            state = true;
-          }
-
-          direct_draw -> Release ( );
-        }
-      }
-    }
-    FreeLibrary (ddraw_dll);
-  }
-
-  return state;
-}
-
-#endif
diff --git a/panda/src/windisplay/winDetectDx8.cxx b/panda/src/windisplay/winDetectDx8.cxx
index 7f07f3d900..e1f84aa7e7 100644
--- a/panda/src/windisplay/winDetectDx8.cxx
+++ b/panda/src/windisplay/winDetectDx8.cxx
@@ -19,7 +19,7 @@
 
 #include "pandabase.h"
 
-#if HAVE_DX
+#if HAVE_DX8
 
 #include <d3d8.h>
 
diff --git a/panda/src/windisplay/winDetectDx9.cxx b/panda/src/windisplay/winDetectDx9.cxx
index a686a52f9c..ad231030a2 100644
--- a/panda/src/windisplay/winDetectDx9.cxx
+++ b/panda/src/windisplay/winDetectDx9.cxx
@@ -19,7 +19,7 @@
 
 #include "pandabase.h"
 
-#if HAVE_DX
+#if HAVE_DX9
 
 #include <d3d9.h>
 
diff --git a/panda/src/windisplay/winGraphicsPipe.cxx b/panda/src/windisplay/winGraphicsPipe.cxx
index a61dc39e7d..b145a1c897 100644
--- a/panda/src/windisplay/winGraphicsPipe.cxx
+++ b/panda/src/windisplay/winGraphicsPipe.cxx
@@ -42,27 +42,21 @@ WinGraphicsPipe() {
       (PFN_TRACKMOUSEEVENT)GetProcAddress(_hUser32, "TrackMouseEvent");
   }
 
-#if HAVE_DX
-  int dx7_display_information (DisplaySearchParameters &display_search_parameters, DisplayInformation *display_information);
-  int dx8_display_information (DisplaySearchParameters &display_search_parameters, DisplayInformation *display_information);
-  int dx9_display_information (DisplaySearchParameters &display_search_parameters, DisplayInformation *display_information);
+#if HAVE_DX9
+  DisplaySearchParameters display_search_parameters_dx9;
+  int dx9_display_information (DisplaySearchParameters &display_search_parameters_dx9, DisplayInformation *display_information);
 
-  DisplaySearchParameters display_search_parameters;
-
-  // DX7
-  if (dx7_display_information (display_search_parameters, _display_information)) {
+  if (dx9_display_information (display_search_parameters_dx9, _display_information)) {
   
   }
-  
-  // try DX9 first
-  if (dx9_display_information (display_search_parameters, _display_information)) {
-  
-  }
-  else {
-    // DX9 failed, try DX8
-    if (dx8_display_information (display_search_parameters, _display_information)) {
+#endif
 
-    }
+#if HAVE_DX8
+  DisplaySearchParameters display_search_parameters_dx8;
+  int dx8_display_information (DisplaySearchParameters &display_search_parameters_dx8, DisplayInformation *display_information);
+  
+  if (dx8_display_information (display_search_parameters_dx8, _display_information)) {
+    
   }
 #endif