Most OEM pre-installed machines have recovery partitions containing OS/drivers and free apps (bloatware). Though the apps are useful for many.
And they offer to make a set of DVDs with the same.
Often referred to as Factory (or System) Restore (or Recovery)
While the DVDs (and boot CD/DVD) should be considered essential emergency supplies, it is more convenient to set up Windows, install AV and security, browser etc, then make a System Image to an external HDD.
My cleanish rebuild is taking just 20 mins to USB 2,0 drive for a complete image. It's a darn sight easier than setting up from completely new.