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How to check if I have 32bit or 64bit Windows installed?



  1. Click Start
  2. Click Run
  3. Type "msinfo32". System Information window will pop up.
  4. Check for 'System Type' on the right panel under System Summary.
  5. Screenshot below shows 'X86-based PC' which means the OS is 32bit.
  6. If it is a 64bit then it will show 'X64-based PC'.

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