"Boot from external device" BIOS option disappeared after reset to factory settings.

Benevolent Deity

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Jun 11, 2010
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Hello,

I have an Asus PT6 Deluxe motherboard and I got from a friend and I'm trying to get everything working, and in fact it did boot up to Win7 using an old HDD that wasn't even configured for the PT6. I then rebooted and entered the BIOS (AMI v02.61) and one of the boot options I saw there was "boot from external device". However, since the previous owner was a gamer and might have have tweaked the system, which I didn't want, I chose to reset the BIOS back to its original factory settings.

After doing that and rebooting into the BIOS again, however, "boot from external device" was no longer a choice and instead it merely gave the choices of a floppy, a CD, and a HDD, even though the HDD was the only one of those three that was installed. Out of desperation I plugged a bootable USB thumb drive in but that made no difference in the options.

I know the USB ports are working because I have a wireless keyboard/mouse dongle connected to one. I've looked through the various BIOS settings and I couldn't find anything that looked like it would enable USB booting as a choice, but much of what I saw was fairly cryptic to me. I've tried both the IDE and AHCI modes, but that didn't make any difference either. It's got to be something simple since that option was there before I went back to the factory settings. Any ideas will be appreciated.

Thanks,
Ray
 

Benevolent Deity

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Yes, I tried that. However, since booting from an external device was not even a BIOS option I didn't really think plugging in the bootable USB device before powering up would work, and it didn't.