diff --git a/board/led15093.c b/board/led15093.c
index cb3cd2e..606ce27 100644
--- a/board/led15093.c
+++ b/board/led15093.c
@@ -239,15 +239,25 @@ static HRESULT led15093_handle_irp_locked(int board, struct irp *irp)
     
     if (irp->op == IRP_OP_OPEN) {
         dprintf("LED 15093: Starting backend DLL\n");
-            int res = led_init();
+        // int res = led_init();
+        hr = led_init();
+        
+        /*
+        if (res != 0) {
+            dprintf("LED 15093: Backend error, LED board disconnected: "
+                    "%d\n",
+                    res);
 
-            if (res != 0) {
-                dprintf("LED 15093: Backend error, LED board disconnected: "
-                        "%d\n",
-                        res);
+            return E_FAIL;
+        }
+        */
+        if (FAILED(hr)) {
+            dprintf("LED 15093: Backend error, LED board disconnected: "
+                    "%x\n",
+                    (int) hr);
 
-                return E_FAIL;
-            }
+            return hr;
+        }
     }
 
     hr = uart_handle_irp(boarduart, irp);
diff --git a/board/led15093.h b/board/led15093.h
index ff2f612..869a11b 100644
--- a/board/led15093.h
+++ b/board/led15093.h
@@ -16,7 +16,7 @@ struct led15093_config {
     uint16_t fw_sum;
 };
 
-typedef int (*io_led_init_t)();
+typedef HRESULT (*io_led_init_t)(void);
 typedef void (*io_led_set_leds_t)(uint8_t board, uint8_t *rgb);
 
 HRESULT led15093_hook_init(const struct led15093_config *cfg, io_led_init_t _led_init, 
diff --git a/chunihook/chuni-dll.h b/chunihook/chuni-dll.h
index 034b204..8341b48 100644
--- a/chunihook/chuni-dll.h
+++ b/chunihook/chuni-dll.h
@@ -13,7 +13,7 @@ struct chuni_dll {
     void (*slider_start)(chuni_io_slider_callback_t callback);
     void (*slider_stop)(void);
     void (*slider_set_leds)(const uint8_t *rgb);
-    int (*led_init)();
+    HRESULT (*led_init)(void);
     void (*led_set_leds)(uint8_t board, uint8_t *rgb);
 };
 
diff --git a/chuniio/chuniio.c b/chuniio/chuniio.c
index 32481f1..95a52d7 100644
--- a/chuniio/chuniio.c
+++ b/chuniio/chuniio.c
@@ -166,7 +166,7 @@ static unsigned int __stdcall chuni_io_slider_thread_proc(void *ctx)
     return 0;
 }
 
-int chuni_io_led_init()
+HRESULT chuni_io_led_init(void)
 {
     return led_output_init(&chuni_io_cfg);
 }
diff --git a/chuniio/chuniio.h b/chuniio/chuniio.h
index 5fc7ebe..1ecba4a 100644
--- a/chuniio/chuniio.h
+++ b/chuniio/chuniio.h
@@ -153,7 +153,7 @@ void chuni_io_slider_set_leds(const uint8_t *rgb);
    overlap with each other. Ensuring synchronization inside your IO DLL is
    your responsibility. */
 
-int chuni_io_led_init();
+HRESULT chuni_io_led_init(void);
 
 /* Update the RGB LEDs. rgb is a pointer to an array of 66 * 3 = 198
    bytes. The majority of these are for the marquee display, but the final
diff --git a/chuniio/ledoutput.c b/chuniio/ledoutput.c
index 84509bc..ab0187f 100644
--- a/chuniio/ledoutput.c
+++ b/chuniio/ledoutput.c
@@ -19,18 +19,18 @@ static bool any_outputs_enabled;
 
 HANDLE led_init_mutex;
 
-int led_output_init(struct chuni_io_config* const cfg)
+HRESULT led_output_init(struct chuni_io_config* const cfg)
 {
     DWORD dwWaitResult = WaitForSingleObject(led_init_mutex, INFINITE);
     if (dwWaitResult == WAIT_FAILED)
     {
-        // return HRESULT_FROM_WIN32(GetLastError());
-        return 1;
+        return HRESULT_FROM_WIN32(GetLastError());
+        // return 1;
     }
     else if (dwWaitResult != WAIT_OBJECT_0)
     {
-        // return E_FAIL;
-        return 1;
+        return E_FAIL;
+        // return 1;
     }
     
     if (!led_output_is_init)
@@ -65,8 +65,8 @@ int led_output_init(struct chuni_io_config* const cfg)
     led_output_is_init = true;
     
     ReleaseMutex(led_init_mutex);
-    // return S_OK;
-    return 0;
+    return S_OK;
+    // return 0;
 }
 
 struct _chuni_led_data_buf_t* escape_led_data(struct _chuni_led_data_buf_t* unescaped)
diff --git a/chuniio/ledoutput.h b/chuniio/ledoutput.h
index 82e54b1..33a4180 100644
--- a/chuniio/ledoutput.h
+++ b/chuniio/ledoutput.h
@@ -15,5 +15,5 @@
 #include "chuniio/config.h"
 
 extern HANDLE led_init_mutex;
-int led_output_init(struct chuni_io_config* const cfg);
+HRESULT led_output_init(struct chuni_io_config* const cfg);
 void led_output_update(uint8_t board, const byte* rgb);
diff --git a/chusanhook/chuni-dll.h b/chusanhook/chuni-dll.h
index 034b204..8341b48 100644
--- a/chusanhook/chuni-dll.h
+++ b/chusanhook/chuni-dll.h
@@ -13,7 +13,7 @@ struct chuni_dll {
     void (*slider_start)(chuni_io_slider_callback_t callback);
     void (*slider_stop)(void);
     void (*slider_set_leds)(const uint8_t *rgb);
-    int (*led_init)();
+    HRESULT (*led_init)(void);
     void (*led_set_leds)(uint8_t board, uint8_t *rgb);
 };
 
diff --git a/fgohook/fgo-dll.h b/fgohook/fgo-dll.h
index 05dd997..22bf02d 100644
--- a/fgohook/fgo-dll.h
+++ b/fgohook/fgo-dll.h
@@ -11,7 +11,7 @@ struct fgo_dll {
     void (*get_opbtns)(uint8_t *opbtn);
     void (*get_gamebtns)(uint8_t *gamebtn);
     void (*get_analogs)(int16_t *stick_x, int16_t *stick_y);
-    int (*led_init)();
+    HRESULT (*led_init)();
     void (*led_set_leds)(uint8_t board, uint8_t *rgb);
 };
 
diff --git a/fgoio/fgoio.c b/fgoio/fgoio.c
index 5ffbd72..95c86d9 100644
--- a/fgoio/fgoio.c
+++ b/fgoio/fgoio.c
@@ -140,9 +140,10 @@ void fgo_io_get_analogs(int16_t *stick_x, int16_t *stick_y)
     }
 }
 
-int fgo_io_led_init()
+HRESULT fgo_io_led_init(void)
 {
-    return 0;
+    // return 0;
+    return S_OK;
 }
 
 void fgo_io_led_set_leds(uint8_t board, uint8_t *rgb)
diff --git a/fgoio/fgoio.h b/fgoio/fgoio.h
index 6e526f5..5a815a7 100644
--- a/fgoio/fgoio.h
+++ b/fgoio/fgoio.h
@@ -77,7 +77,7 @@ void fgo_io_get_analogs(int16_t *stick_x, int16_t *stick_y);
    overlap with each other. Ensuring synchronization inside your IO DLL is
    your responsibility. */
 
-int fgo_io_led_init();
+HRESULT fgo_io_led_init(void);
 
 /* Update the RGB LEDs.