title: cc1.exe System Error - libwinpthread-1.dll missing - But it isn't
body: <p>I recently downloaded MinGW-w64 from Sourceforge onto my external hard drive, where all the files reside in:</p>
  
  <p><code>E:\mingw-w64\x86_64-4.9.2-posix-seh-rt_v3-rev1\mingw64\bin</code></p>
  
  <p>When I try compiling my first "Hello World" program using gcc on Windows 8.1, I get a cc1.exe System Error, that tells me</p>
  
  <blockquote>
    <p>The program can't start because libwinpthread-1.dll is missing.
    Try reinstalling the program to fix the problem.</p>
  </blockquote>
  
  <p>And yet, libwinpthread-1.dll (all 54,784 bytes of it) is sitting right there in the very same directory as gcc.exe. Do I really need to reinstall everything, or is something else going wrong here?</p>