Installing on a computer with USB 3.0 hardware
Solution 1:
If your computer have an SD slot card, install from it. Put the image in both, the CD and the SD card. Your computer will start from the CD and it will load the installation from the SD. This is because your SD has USB 2.0 ports.
The HP Envy 15 have more issues to solve. You can find how to solve them in my blog:
http://airamrguez.blogspot.com/search/label/HP%20Envy