Re: HP ProDesk 600 G2 SFF can't boot from USB or DVD

Hi:

You have to go into the BIOS, enable legacy mode and disable secure boot in order to install W7.

Then you also need to run this tool to put the USB3 drivers into your W7 usb flash drive.

 https://downloadcenter.intel.com/download/25476/Windows-7-USB-3-0-Creator-Utility