Do not use any of these options.
Instead, hit F12 after power up to enter the boot menu. There, choose
+ HDD: this opens a new list of devices. Your USB stick should appear among them.
If this is not the case, you should check/try a number of other things.
Warning, you may have to do some voodoo tricks on top of that.
Try by order of priority (or do all of them at once):
- Reboot and enter BIOS settings. Under
Integrated peripherals, make sure things like
USB Storage are enabled.
- Unplug all other USB devices, excepted the keyboard (if you have a PS/2 one, use it instead of the USB one).
- Use Rufus software to rewrite your USB from a CD/DVD iso. (Make sure to use the small arrow near
Format options to drop down the advances options, and tick
compatibility options for old BIOSes.)
- Some reports tell you should try over and over hot plugging the USB stick during BIOS loading, and eventually it ends up showing.
- Flash your BIOS to latest version available. Some people in previous link recommends downgrading it instead.
Remember, you should at each try ask for boot menu (F12 on Award BIOS on Gigabyte), then choose
+ HDD and there check if your USB stick appears in the list.
You may also give up actually BIOS booting from the USB stick and choose some alternate solution.
The nearest one is in my opinion using Plop Boot Manager. It can replace a Windows boot loader for giving you an option to boot from other devices instead, including USB drive. This allow you to dodge a buggy BIOS unable to detect your stick itself.
And if you do not want to alter your disk with Plop Boot Manager, you may instead put it on a floppy disk (yes, I still have that) or a cd, boot from them, and then use Plop to boot your USB stick.
Or you completely give up your stick and use another kind of bootable device (DVD, CD, ...).
This was not working for me, indeed I tried first with a DVD, re-burn a second one, was not working... Maybe bad DVD-R, maybe bad reader... So I have tried with USB... But then, "thanks" to that P35-DS4 Gigabyte mobo, it took many other hours of fiddling... I had to go till step 3 (combined with 2, not tested them separately). And I had flashed my BIOS (using a floppy disk) to latest version many tries before.
Most of the information I have written were on this blog and its comments.