LiveCD hangs during boot

I'm having trouble installing Mageia 2 64bit KDE, on an HP Pavilion g6. It would hang during the boot process, so I tried passing the boot option nomodeset, and deleted splash quite to see what was going on. The last message before the boot hangs is:
I also tried putting the iso on a USB Stick using dd, and it won't boot at all...
The md5sum checks out.
Using '/etc/ld.so.conf.d/GL/standard.conf' to provide 'gl.conf.' [OK]
I also tried putting the iso on a USB Stick using dd, and it won't boot at all...
isolinux.bin missing or corrupt.
error: no such partition
The md5sum checks out.