I am trying to update the bios on an Asus P5VD2-VM motherboardd. When I get into the flash utilty in the bios it only shows the path to A and C. The PC has no floppy disk drive.
I have the updated bios on both a USB pen drive and a DVD. I am just not getting the option to choose either of them?
Any ideas what I can try?

I have the updated bios on both a USB pen drive and a DVD. I am just not getting the option to choose either of them?
Any ideas what I can try?