c# - ReSharper "Cannot resolve symbol" even when project builds

My Tools:

Visual Studio 2012 Ultimate + Update 1

ReSharper v7.1.25.234

My Solution Build Status: Build Successfully

But when I install ReSharper and ReSharper code analysis is enable, many keywords of my code are red with this error:

"Cannot resolve symbol XXX"

---

Another picture of my project >>

The ReSharper “CANNOT RESOLVE SYMBOL” errors are everywhere, but my project build process is successfully, and it works correctly.

Additional Note: If I disable ReSharper Code Analysis, my project will be Normal, but I want to use ReSharper code analysis.

---

I tried ReSharper → Options → General → Clear Cache. But I still have this problem!

---

• One month ago, I got these errors when I uninstalled Visual Studio 2012 RC and installed VS 2012 RTM.




• I've already uninstalled and installed ReSharper again. But I have this problem yet!




• My solution has five projects >> two loaded projects (main project + resource project) and three unloaded projects

---

I realize that my Visual Studio also has bigger problems (More information on Stack Overflow)

• I can't add any reference to my projects (even inside new solutions and new projects)




• I can't install any package (by "Packet Manager Console" or Manage NuGet Package)




• I can't update any package (by "Packet Manager Console" or Manage NuGet Package)

I've done a lot of suggestions (of myself and others)

• Re-resister some DLL files




• Using some windows and registry repair tools




• Remove ReSharper




• Repair Visual Studio




• and...

But I could not solve it.

I'm thinking of installing a new Windows :(

---

What is wrong, and how can I fix it?