[WIN7] System Repair Disc won't boot computer

Hi... I've had to restore Windows 7 Home onto my computer. And after a fresh install I decided to make an image of my hard drive. So I purchased TruImage 2014 and made an image. I also decided to make a Windows Emergency Repair Disc and Windows Images. I used a blank DVD. However when I attempt to bootup with the Windows Repair Disc I get an error message. "1. FD 1.44 System Type (13) Non System disk or disk error" So I made a 2nd Windows Emergency Repair Disc and I get the same message. Yet I am able to bootup with my original Windows 7 DVD and the TruImage recovery CD I made. Also the Windows Emergency Repair Disc works fine in my 2nd computer. I've tried all the settings in bios for CD/DVD drive EFI, Non-EFI, Auto but all with the same results... Any ideas? Cheers