Hi,
Sorry for the delayed response. There is an image called x86_64. This is the one I used as the CPU on the laptop is 64bit. However, it's not a very powerful one, just Intel Celeron single core - the laptop has 2Gb of ram. It may be that it is simply incompatible (it's not on the compatibility list though that's far from comprehensive), or that the laptop isnt powerful enough. At least I know it does work on some laptops - what spec is yours?
Cheers