Install Windows 7/8/10 Without DVD or USB stick

How to install Windows 7, 8, 8.1 or 10 with the help of EasyBCD under Windows 7.\r
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Download EasyBCD (boot loader manager for Windows Vista,7,8,10):\r
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Download Windows 10 (Windows 8.1 Preview is no longer available)\r
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More details here:\r
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QUICK GUIDE (under Windows 7):\r
- Extr Windows 7/8/10 ISO file to a folder on the Hard Disk;\r
- Add the Windows ISO file to boot menu using EasyBCD;\r
- Boot the PC from the Windows ISO file;\r
- Start Windows setup from the extred folder! (Sourcessetup.exe)\r
- Optionally install Windows into a VHD file (no partitioning required, safer)