The Core i5 based pavilions have what can only be called lame BIOS. At the boot screen hit <TAB> then add this to the end of the line.
Quote:
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acpi_osi=Linux acpi_backlight=vendor
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This should cure the no video problem. If this works then after installing Fedora modify /etc/default/grub adding the above to the "GRUB_CMDLINE_LINUX=" line, ensuring that they are inside the double quotes. Save the file then run, as root -
Quote:
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grub2-mkconfig -o /boot/grub2/grub.cfg
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This works for all distros not just Fedora.