So you can boot the Windows 7 installer and it stops on the disk setup? Have you tried deleting all existing partitions on the drive with the installer? That includes the system and recovery partitions...make the drive all unallocated space then use the "new" button to format and partition it for Windows 7.
This is the AMD model, right? It can run Windows 7 but drivers are going to be a challenge.
I have changed the BIOS to Legacy, inserted Win7 boot CD and it "loaded files". Changed the LANGUAGE to English UK and then clicked INSTALL NOW. I accepted the T&Cs, selected CUSTOM INSTALL. Deleted the RECOVERY PARTITION, then PARTIT ION1. Total disk (119.2GB is now unallocated. Clicked on NEW and made the 122103 MB into a partition. This made a SYSTEM RESERVE Partition of 100.0MB and PARTITION 2 = 119.1 GB (PRIMARY). Clicked NEXT and it started to copy WINDOWS files etc
When completed and restarting, black screen appeared stating windows failed to start. It now loops rouns trying to start but fails.