Yes I followed a guide changing 42 to 07 although the picture and the actual looked a bit different. So here I am looking to reinstall windows cause it won't boot due to some blue screeen that flashes. I wanted to install Win8 dual booted with Win7. Dynamic disk preventing me from this and no software to convert. So at least I'm getting all my data back and will reformat reinstall following. I'll leave off the HP Ware as much as possible.
I have done this successfully in the past. It doesn't require conversion. You need to change the partition type ID (cannot remember what it is from the top of my head) to NTFS (which I am assuming that you are using. I believe the ID for NTFS is 07.
I have had success in doing this using CFDISK and FDISK on SystemRescueCD.
I managed to copy over some really important files so far, just waiting on the larger save. Most of it I probably won't need but we'll see.
Do you think you suggestion will fix what I discribed? so I don't have to reinstall?