diff -urN blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_avx.cpp blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_avx.cpp
--- blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_avx.cpp	2017-01-21 23:34:42.502290800 +0000
+++ blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_avx.cpp	2017-01-21 23:35:05.135410900 +0000
@@ -19,7 +19,7 @@
  * is compiled without for other CPU's. */
  
 /* SSE optimization disabled for now on 32 bit, see bug T36316. */
-#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86)))
+#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86))) || defined(WIN32)
 #    define __KERNEL_SSE__
 #    define __KERNEL_SSE2__
 #    define __KERNEL_SSE3__
diff -urN blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_avx2.cpp blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_avx2.cpp
--- blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_avx2.cpp	2017-01-21 23:34:42.535294300 +0000
+++ blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_avx2.cpp	2017-01-21 23:35:11.368213100 +0000
@@ -19,7 +19,7 @@
 #  define KERNEL_STUB
 #else
 /* SSE optimization disabled for now on 32 bit, see bug T36316. */
-#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86)))
+#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86))) || defined(WIN32)
 #    define __KERNEL_SSE__
 #    define __KERNEL_SSE2__
 #    define __KERNEL_SSE3__
diff -urN blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_sse2.cpp blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_sse2.cpp
--- blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_sse2.cpp	2017-01-21 23:34:42.509291800 +0000
+++ blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_sse2.cpp	2017-01-21 23:35:16.535104100 +0000
@@ -19,7 +19,7 @@
 #  define KERNEL_STUB
 #else
 /* SSE optimization disabled for now on 32 bit, see bug T36316. */
-#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86)))
+#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86))) || defined(WIN32)
 #    define __KERNEL_SSE2__
 #  endif
 #endif  /* WITH_CYCLES_OPTIMIZED_KERNEL_SSE2 */
diff -urN blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_sse3.cpp blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_sse3.cpp
--- blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_sse3.cpp	2017-01-21 23:34:42.521290800 +0000
+++ blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_sse3.cpp	2017-01-21 23:35:21.888140600 +0000
@@ -19,7 +19,7 @@
 #  define KERNEL_STUB
 #else
 /* SSE optimization disabled for now on 32 bit, see bug T36316. */
-#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86)))
+#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86))) || defined(WIN32)
 #    define __KERNEL_SSE2__
 #    define __KERNEL_SSE3__
 #    define __KERNEL_SSSE3__
diff -urN blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_sse41.cpp blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_sse41.cpp
--- blender-2.78a.orig/intern/cycles/kernel/kernels/cpu/kernel_sse41.cpp	2017-01-21 23:34:42.528291800 +0000
+++ blender-2.78a/intern/cycles/kernel/kernels/cpu/kernel_sse41.cpp	2017-01-21 23:35:41.958064000 +0000
@@ -19,7 +19,7 @@
 #  define KERNEL_STUB
 #else
 /* SSE optimization disabled for now on 32 bit, see bug T36316. */
-#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86)))
+#  if !(defined(__GNUC__) && (defined(__i386__) || defined(_M_IX86))) || defined(WIN32)
 #    define __KERNEL_SSE2__
 #    define __KERNEL_SSE3__
 #    define __KERNEL_SSSE3__