diff --git a/code/win32/win_glimp.cpp b/code/win32/win_glimp.cpp
index 51298f7..15326b7 100644
--- a/code/win32/win_glimp.cpp
+++ b/code/win32/win_glimp.cpp
@@ -762,14 +762,6 @@ static void GLW_InitExtensions()
 }
 
 
-static qbool GLW_CheckOSVersion()
-{
-	OSVERSIONINFO vinfo;
-	vinfo.dwOSVersionInfoSize = sizeof(vinfo);
-	return (qbool)GetVersionEx( &vinfo );
-}
-
-
 static qbool GLW_LoadOpenGL()
 {
 	// only real GL implementations are acceptable
@@ -875,24 +867,15 @@ void GLimp_SetGamma( unsigned char red[256], unsigned char green[256], unsigned
 		table[2][i] = ( ( ( unsigned short ) blue[i] ) << 8 ) | blue[i];
 	}
 
-	// Win2K puts this odd restriction on gamma ramps...
-	OSVERSIONINFO vinfo;
-	vinfo.dwOSVersionInfoSize = sizeof(vinfo);
-	GetVersionEx( &vinfo );
-	if ( vinfo.dwMajorVersion >= 5 && vinfo.dwPlatformId == VER_PLATFORM_WIN32_NT ) {
-		Com_DPrintf( "performing W2K gamma clamp.\n" );
-		for ( j = 0 ; j < 3 ; j++ ) {
-			for ( i = 0 ; i < 128 ; i++ ) {
-				if ( table[j][i] > ( (128+i) << 8 ) ) {
-					table[j][i] = (128+i) << 8;
-				}
-			}
-			if ( table[j][127] > 254<<8 ) {
-				table[j][127] = 254<<8;
+	for ( j = 0 ; j < 3 ; j++ ) {
+		for ( i = 0 ; i < 128 ; i++ ) {
+			if ( table[j][i] > ( (128+i) << 8 ) ) {
+				table[j][i] = (128+i) << 8;
 			}
 		}
-	} else {
-		Com_DPrintf( "skipping W2K gamma clamp.\n" );
+		if ( table[j][127] > 254<<8 ) {
+			table[j][127] = 254<<8;
+		}
 	}
 
 	if ( !SetDeviceGammaRamp( glw_state.hDC, table ) ) {
@@ -916,10 +899,6 @@ void GLimp_Init()
 {
 	ri.Printf( PRINT_DEVELOPER, "Initializing OpenGL subsystem\n" );
 
-	// check OS version to see if we can do fullscreen display changes
-	if ( !GLW_CheckOSVersion() )
-		ri.Error( ERR_FATAL, "GLimp_Init() - incorrect operating system\n" );
-
 	// save off hInstance for the subsystems
 	const cvar_t* cv = ri.Cvar_Get( "win_hinstance", "", 0 );
 	sscanf( cv->string, "%i", (int *)&g_wv.hInstance );