nForce 750i SLI Motherboard
the + or – keys to move the device priority up or down in the list. To go back to the previous menu, press Esc.
The Options are: Floppy Disk, LS120, ZIP100,
Hard Disk Boot Priority
Use this option to select the priority for HDD startup. Press Enter to see the list of bootable devices in your system. Use the 
arrow keys to go to the various devices. Then use the + or – keys to move the device priority up or down in the list. To go back to the previous menu, press Esc.
The options are Pri. Master, Pri. Slave, Sec. Master, Sec. Slave, USBHDD0, USBHDD1, USBHDD2, Bootable
Quick Power On Self Test
Enabling this option allows the system to skip certain test while booting, which reduces the time needed to boot the system. Use the Page Up and Page Down keys to toggle between Enable and Disable.
First/Second/Third Boot Device
Use this option to set the priority sequence of the devices booted at power on. Use the Page Up and Page Down keys to scroll through the options or press Enter to display the 
arrow keys to position the selector in the option you choose.
The options are Floppy, LS120, Hard Disk, CDROM, ZIP100,
Boot Other Device
With the option set to Enable, the system boots from some other device if the first/second/third boot devices fail.
Boot Up NumLock Status
This option allows you to select the
Security Option
The Security Options allows you to require a password every time the system boots or only when you enter setup. Select Setup to require a password to gain access to the CMOS Setup screen. Select System to require a password to access the CMOS Setup screen and when the system boots.
APIC Mode
Use this function to enable or disable the Advanced Programmable Interrupt Controller (APIC). If you disable this option, you also disable the MPS Version Control for OS option.