Use a recovery disk to correct errors

My laptop came with everything per-installed, including the Windows 7 operating system.  There were no recovery disks or installation disks.  It came as a complete surprise, when my laptop started acting up and asked me to insert Windows installation disk.  When I contacted the manufacturer, I was told that the only thing I could do was to restore my computer from a backup. But I had not learned to maintain backups at that time.  The alternative was to purchase a new operating system.  Instead of trying to help me they tried to make me upgrade to Windows 8.

But I was not prepared to spend additional money to buy a new operating system, when I had already paid for the one installed on my computer.  After intensive Google search, I was able to locate Windows 7 installation disk online. I managed to download it and burn it as an ISO disk. With that ISO installation disk, I was able to repair my computer.  It is important to note that this is only an installation disk, and that I still needed the product key from my original OS to make it work.