Hi Jeremywiddup,
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How long have you been facing this issue?
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Did you make any recent changes prior to the issue?
Method 1: I would suggest you to
repair .Net framework and also reinstall visual C++ redistributable package.
You may need to repair your installation of the .NET Framework if you upgrade your operating system or if the current installation of the .NET Framework becomes corrupted.
Refer the following Microsoft article and follow the steps mentioned to repair the .Net Framework installation:
How to repair an existing installation of the .NET Framework
http://support.microsoft.com/kb/306160
Also re-install visual C++ redistributable package
Microsoft Visual C++ 2010 Redistributable Package (x86)
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=a7b7a05e-6de6-4d3a-a423-37bf0912db84
Microsoft Visual C++ 2010 Redistributable Package (x64)
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=bd512d9e-43c8-4655-81bf-9350143d5867
**Method 2:**If that does not work, create a new user account and check. If it works in a new user account, then probably your user account may have been corrupted and would need a fix.
Create a user profile
http://windows.microsoft.com/en-US/windows7/Create-a-user-account
Now check for the issue.
Follow the below provided link to fix the corrupted user profile.
http://windows.microsoft.com/en-US/Windows7/Fix-a-corrupted-user-profile