title: Visual Studio crashes on start up
body: <p>I've been using Visual Studio 2010 for over a year now to work on XNA games for the Windows Phone 7. Just today it started crashing every single time it loads. If I load the game I'm currently working on it will crash. If I just open VS by itself it crashes as well. It just started today. I have no idea what suddenly caused it to start. I updated my graphics drivers but that shouldn't have caused it. I haven't done much else since I was just working on my game a couple days ago. I tried reapplying VS2010 SP1 but it failed. I tried to install windows updates for VS2010 but they apparently failed to install as well.</p>
  
  <p>I'm not sure what to try now. I could try to install the updates again. I'm not sure why they keep failing to install. It just says the program has stopped working and needs to close. I've restarted a couple times as well. Any thoughts on what I could try next?</p>
  
  <blockquote>
    <p>Problem signature: <br />
     Problem Event Name:  CLR20r3 <br />
     Problem Signature 01:    devenv.exe <br />
     Problem Signature 02:    10.0.40219.1 <br />
     Problem Signature 03:    4d5f2a73 <br />
     Problem Signature 04:    mscorlib <br />
     Problem Signature 05:    4.0.0.0 <br />
     Problem Signature 06:    4dd23522 <br />
     Problem Signature 07:    3789 <br />
     Problem Signature 08:    3e <br />
     Problem Signature 09:    System.UnauthorizedAccess <br />
     OS Version:  6.1.7601.2.1.0.256.48 <br />
     Locale ID:   1033</p>
  </blockquote>