We have experienced this on 64 bit systems too (we never use 32bit). One of the responses was from GilesMiddleton-0114. WinISO v6.4 - ISO fixed it for me as well, iso file from other burners didn't work. Given the hours I spent wasted trying to get my guests to boot the install DVD, I bought a WinISO license even though the free trial let me create the ISO I needed. I believe a lot of ISO creation tools are old and can't handle newer secure boot enabled DVDs. Secure Boot can be enabled since an MS install DVD is acceptable to it. Finally, when I used WinISO v6.4 - ISO booted immediately with no problem. In the end - it looks like for me it was the ISO software. (I could have copied an ISO I've used before but seemed faster just to create a new ISO from the install DVD) Tried many of the possible solutions posted - Secure Boot Disabled, Memory size (20), and so on. Made no sense as I've done this a number of times before. I had same problem with trying to get my ISO to boot to install Server 2012 R2.
Sorry to kick up an old thread, but its' high in Google Search.