Insert a USB flash disk

Open a command prompt window and Run Diskpart.exe

Perform following commands –

diskpart

Perform following commands –

List disk – this will show disk numbers
Select disk 2
Clean
Create part pri
Select Part 1
Format quick fs=ntfs
Active
Assign
Exit

Then extract your bootable iso file to main director of the USB drive by using 7zip. if you do not have the 7-Zip, you can download form the following link.

After extracting iso, disconnect the USB and re-connect.

reboot your PC and select to boot from USB from Bios.