You're welcome! Let's walk through the steps to run a game downloaded as an “.iso” file (which is likely what you meant by “OS file”) on your Windows PC:
An .iso file is a disk image — a copy of an entire CD, DVD, or Blu-ray disc. Games distributed this way need to be mounted or extracted before you can run them.
Steps to Run a Game from an .ISO File on Windows 10/11
Mount the ISO (Built-in in Windows 10/11)
Locate the .iso file you downloaded.
Right-click the file and select “Mount”.
A new virtual drive will appear in File Explorer (like a new DVD drive).
Open the drive and look for:
A file named setup.exe, install.exe, or similar.
Double-click it to start the installation.
Once installed, you can usually launch the game from your Start Menu or Desktop.
Extract Instead of Mounting
If you prefer:
Use 7-Zip or WinRAR to extract the contents of the ISO.
Browse the extracted folder for setup.exe and run it.
Important Reminders
Make sure your antivirus is enabled and scan the ISO before installing anything.
Only download games from trusted and legal sources to avoid malware.
Some games may require additional components like DirectX, Visual C++ Redistributables, or .NET Framework—you can install these if prompted during setup.
Hope that helps! Please let me know if you still have questions. I will be happy to help.
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Warm regards,
Adrian A