游戏启动无反应，XNA不能安装

瑶不可及！

错误报告如下：
Version: 1.4.7.0        Thread: RenderThread


Microsoft.Xna.Framework.Content.ContentLoadException: Error loading "Languages\ENG\Font\Maiandra14". ---> System.IO.FileNotFoundException: Failed to load XnaNative.dll. Please verify that you have the XNA Framework installed.
   在 ImportXnaNativeMethod((fnptr)* method, SByte* methodName)
   在 Microsoft.Xna.Framework.Content.NativeMethods.CreateDecompressionContext()
   在 Microsoft.Xna.Framework.Content.DecompressStream..ctor(Stream baseStream, Int32 compressedTodo, Int32 decompressedTodo)
   在 Microsoft.Xna.Framework.Content.ContentReader.PrepareStream(Stream input, String assetName)
   --- 内部异常堆栈跟踪的结尾 ---
   在 Microsoft.Xna.Framework.Content.ContentReader.PrepareStream(Stream input, String assetName)
   在 Microsoft.Xna.Framework.Content.ContentManager.ReadAsset[T](String assetName, Action`1 recordDisposableObject)
   在 Microsoft.Xna.Framework.Content.ContentManager.Load[T](String assetName)
   在 Magicka.Graphics.FontManager..ctor()
   在 Magicka.Graphics.FontManager.get_Instance()
   在 Magicka.Localization.LanguageManager.SetLanguage(Language iLanguage)
   在 Magicka.Game.Initialize()
   在 Microsoft.Xna.Framework.Game.Run()
   在 Magicka.Program.Main(String[] args)


0x00f6 Microsoft.Xna.Framework.dll->Microsoft.Xna.Framework.Content.ContentReader.PrepareStream
0x002f Microsoft.Xna.Framework.dll->Microsoft.Xna.Framework.Content.ContentManager.ReadAsset
0x0085 Microsoft.Xna.Framework.dll->Microsoft.Xna.Framework.Content.ContentManager.Load
0x0032 Magicka.exe->Magicka.Graphics.FontManager..ctor
0x0021 Magicka.exe->Magicka.Graphics.FontManager.get_Instance
0x008c Magicka.exe->Magicka.Localization.LanguageManager.SetLanguage
0x0068 Magicka.exe->Magicka.Game.Initialize
0x0039 Microsoft.Xna.Framework.Game.dll->Microsoft.Xna.Framework.Game.Run
0x0139 Magicka.exe->Magicka.Program.Main



电脑中已经有xna3.1，我原来想重装下，结果出现
然后点ok没有用，卸载也是这样。
win7系统，显卡是nvidia geforce 610M 其他的硬件应该没问题。  弄了半天了，真心求助。