The best way to install an operating system is to install OS from a USB Pen drive. It will only take 20-25 minutes for the installation. You need to enable USB Boot from BIOS Setup and set USB as first preference in boot order.
Article Prepared by : Sanoj P Raj System Administrator, Alathur Mbr HPO,
Palakkad   - 678541 Ph : 9809 904 904

Requirement: 

1. A USB Pen drive (Preferably 8 Gb USB 3)
2. Windows 8 USB Installer Maker Software (A 900 Kb freeware software)
3. A Windows XP / Windows 7 / Windows 8.1 / Windows 10 / Windows Server OS DVD or ISO image of the same.

Steps Involved:

1. Format the Pen drive
2. Copy all files from OS DVD to Pen drive / Extract ISO image of OS to Pen drive.
3. Use Windows 8 USB Installer Maker software to make the Pen drive bootable. Simply select the “USB drive letter” and click “Fix USB Boot”
Now your Pen drive is a bootable USB drive. 
Google Drive Link for Windows 8USB Installer Maker Software: