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#11
It may be that you are using DVD-RW disks. For installation and/or boot disks it is always preferable to use DVD-R or DVD+R disks.
EDIT: Also this is one possible method of flashing your BIOS without an OS:
http://h30434.www3.hp.com/t5/Noteboo...ate/td-p/19975
Just keep in mind that you need to substitute YOUR SYSTEM'S BIOS UPDATE for the one in the article!