Restore your PC just like your mobile phones.
Re-installing Windows is something of a ritual that we have all had to perform some time or another on our PCs. Whether it’s the system slowing down, or an incurable virus so bad that not even the best antivirus can make things good again. Of course, let’s not discount outright hard drive failure either. In any case, chances are when trying to re-install Windows, you won’t have your original disc handy.
Now one of the great things about mobile phones and tablets is that you can always restore or reset the device to original factory settings within minutes. And as Microsoft is bridging the UI and overall experience gap between handheld devices and PCs, it only makes sense to bring this core functionality over to PCs. So with Windows 8 users will have the ability to either “Refresh” or “Reset” their copy of Windows 8 without a disc, as pointed out by Slash Gear.
Basically ‘Refreshing’ your Windows 8 will re-install the OS, but without making any changes to your saved documents and most apps installed. ‘Restoring’ your PC will wipe all data and give you fresh copy of Windows 8 to start over with.
You can check out this new functionality in the Windows 8 Consumer Preview for yourself.