.
(specifically, HP's Pavilion P6-2310)
Excerpted from http://distrowatch.com/weekly.php?issue=20121126#news
Boot machine while pressing F10
Find Secure Boot in the menu tree, ignore warnings
Disable Secure Boot feature
Enable legacy boot options
Enable specific legacy devices, such as USB devices
Save and reboot while holding down F9
If this doesn't work for your device, refer to Jesse Smith's article for clues.
Also, post your solution if some other scheme works for you.
ASUS H110M-R Motherboard Intel 6th/7th Gen LGA1151 DDR4 Micro-ATX i/o shield
$42.00
***NEW*** BCM RX67Q Gaming Motherboard | Intel Q67 2nd/3rd Gen. | LGA1155 | DDR3
$29.77
ASRock B250M-HDV LGA 1151 Micro ATX DDR4 Desktop Motherboard w/ IO Shield
$54.99
Micro ATX Desktop Motherboard ASUS H110M-C LGA 1151
$31.95
ASUS Prime Q270M-C LGA1151 DP HDMI VGA SATA 6GB/s USB 3.0 MicroATX Motherboard
$37.99
Gigabyte GA-B75M-HD3 Intel LGA1155 DDR3 Desktop Motherboard MicroATX USB 3.0
$26.99
Gigabyte AMD B550 UD AC Gaming Motherboard - AMD B550 Chipset - AM4 Socket - AMD
$89.99
MSI B450M PRO-VDH MAX AM4 AMD B450 USB3.2 Micro-ATX Motherboard
$67.99
Gigabyte Technology GA-X99-GAMING 5P, LGA 2011, Intel Motherboard
$78.49
BTC-S37 Mining Motherboard Kit /w SSD & Ram Preinstalled
$59.99