diff --git a/app/AsusACPI.cs b/app/AsusACPI.cs
index c9395adf..5510485a 100644
--- a/app/AsusACPI.cs
+++ b/app/AsusACPI.cs
@@ -67,6 +67,9 @@ public class AsusACPI
     public const uint ScreenOverdrive = 0x00050019;
     public const uint ScreenMiniled = 0x0005001E;
 
+    public const uint DevsCPUFan = 0x00110022;
+    public const uint DevsGPUFan = 0x00110023;
+
     public const uint DevsCPUFanCurve = 0x00110024;
     public const uint DevsGPUFanCurve = 0x00110025;
     public const uint DevsMidFanCurve = 0x00110032;
@@ -336,6 +339,25 @@ public class AsusACPI
         return -1;
     }
 
+    public int SetFanRange(AsusFan device, byte[] curve)
+    {
+        byte min = (byte)(curve[8] * 255 / 100);
+        byte max = (byte)(curve[15] * 255 / 100);
+        byte[] range = { min, max};
+
+        int result;
+        switch (device)
+        {
+            case AsusFan.GPU:
+                result = DeviceSet(DevsGPUFan, range, "FanRangeGPU");
+                break;
+            default:
+                result = DeviceSet(DevsCPUFan, range, "FanRangeCPU");
+                break;
+        }
+        return result;
+    }
+
 
     public int SetFanCurve(AsusFan device, byte[] curve)
     {
diff --git a/app/HardwareControl.cs b/app/HardwareControl.cs
index 0d89898b..a6720d6c 100644
--- a/app/HardwareControl.cs
+++ b/app/HardwareControl.cs
@@ -73,7 +73,7 @@ public static class HardwareControl
         if (_fanMax < 0 && AppConfig.ContainsModel("503")) _fanMax = 68;
         if (_fanMax < 0) _fanMax = DEFAULT_FAN_MAX;
 
-        _fanRpm = AppConfig.Is("fan_rpm");
+        _fanRpm = AppConfig.IsNotFalse("fan_rpm");
 
     }
 
diff --git a/app/Mode/ModeControl.cs b/app/Mode/ModeControl.cs
index a1a3b1c5..0cdb8410 100644
--- a/app/Mode/ModeControl.cs
+++ b/app/Mode/ModeControl.cs
@@ -148,10 +148,16 @@ namespace GHelper.Mode
                 // something went wrong, resetting to default profile
                 if (cpuResult != 1 || gpuResult != 1)
                 {
-                    int mode = Modes.GetCurrentBase();
-                    Logger.WriteLine("ASUS BIOS rejected fan curve, resetting mode to " + mode);
-                    Program.acpi.DeviceSet(AsusACPI.PerformanceMode, mode, "Reset Mode");
-                    settings.LabelFansResult("ASUS BIOS rejected fan curve");
+                    cpuResult = Program.acpi.SetFanRange(AsusFan.CPU, AppConfig.GetFanConfig(AsusFan.CPU));
+                    gpuResult = Program.acpi.SetFanRange(AsusFan.GPU, AppConfig.GetFanConfig(AsusFan.GPU));
+
+                    if (cpuResult != 1 || gpuResult != 1)
+                    {
+                        int mode = Modes.GetCurrentBase();
+                        Logger.WriteLine("ASUS BIOS rejected fan curve, resetting mode to " + mode);
+                        Program.acpi.DeviceSet(AsusACPI.PerformanceMode, mode, "Reset Mode");
+                        settings.LabelFansResult("ASUS BIOS rejected fan curve");
+                    }
                 }
                 else
                 {