Update C640 BIOS to A10

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Update C640 BIOS to A10

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My folks C640 was acting up, so I am trying to update the BIOS. It has A09 on it. I downloaded A10 to a floppy from the Dell help & Support Downloads, only to find out the C640 doesn't boot from a USB floppy drive.

I burned the A10 update to a CD from the floppy, but can't get the machine to boot from the CD with the F12 command. When I select boot from CD/DVD it boots normally into Windows? How do I install the update if it will not boot from a CD?

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