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HP Z4 G5 Workstation Desktop PC (57K36AV)

I'm attempting to install the Solaris 11 operating system on an HP Z4G5 workstation. Despite changing the BIOS settings several times, the screen remains stuck at the 'WELCOME TO GRUB' stage. In the BIOS settings, I've disabled security settings, turned off secure boot, and disabled fast boot. I've tried various methods, including booting from a USB drive (formatted as both FAT and FAT32), booting from a CD, and using a hard disk with the Solaris 11 operating system, but none of these methods have been successful. Can anyone provide guidance on resolving this issue?

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