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It is possible to boot from a USB drive....but only if the USB drive has been formatted as bootable, in the same way that OS CDs and DVDs are bootable media. You have to have an operating system either on the hard drive or on the flash drive in order to boot the computer. The BIOS is simply a "Basic Input-Output System" that interfaces the computer hardware to the OS, whatever media it is on. That is why you have to select the boot device and the boot device priority in the BIOS during setup, so it can direct itself to the bootable OS. Once you have installed an OS, then all will work fine. Until then, you will continue to have issues. Normally, with Window-based systems (you don't say what OS you are trying to use), you would insert the bootable Windows setup disk in the CD/DVD drive, ensure the BIOS was set to boot to CD/DVD first, and start the computer. The windows setup file would load itself and start the OS install process. It may even be necessary to partition and format the hard drive during this evolution, but the setup program would lead you through that as well. I have seen Windows setup files loaded to USB sticks, but they require a special process to generate so the BIOS sees the USB as bootable.
You didn't provide any details on what OS you are running or trying to load, but here are some steps to verify.
1. Ensure that the procedures you used to create your bootable USB device or bootable CD are correct. These will not boot unless they have a boot loader installed properly on them.
2. While running your existing system, ensure that you can actually view the files on your USB device or CD (in case either device is not actually working).
3. Ensure that the BIOS settings set the boot priority to USB or CD ahead of the hard drive.
you have to format your hard drive using a third party disc to erase
everything on your hard drive During the boot process you will see on the screen to press a certain key
to enter setup Press and hold that key during the boot up process to enter BIOS the scroll
to advanced bios features press enter change your first boot device to cd,press
escape then press f10 to save to cmos restart note this will erase you operating system you will have to have an
operating system disk to load it onto you hard drive or create a partition to
load another operating system note after you have loaded the operating system you must go back and change
the first boot device to your hard drive The BIOS is AMI. Under ADVANCED SETUP:
The options listed for 1st,2nd ,3rd Boot device include:
IDE0 means Pri master
IDE1 means Pri slave
IDE2 means Sec master
IDE3 means Sec slave
or if you are using a USB insert your usb drive click start right click on my computer select open you should see your USB
drive right click then select format another way is to control panel
administrive tools,computer management disk management right click on your
drive select format hope this helps
JUST DO ONE THING FIRST IF YOUR BIOS BATTERY IS OLD THEN REPLACE IT THEN GOTO SETUP BY PRESSING DELETE OR F2 KEY THEN SET DATE & TIME GOTO BOOT DEVICES---PREFERENCES---SET FIRST BOOT DEVICE AS CD/DVD ROM OR HDD SAVE BY PRESSING F10
When a computer is powered on, the BIOS ("basic input output system") has only a few commands available to it, and the main one is to search for a "boot device" - a storage device which contains "bootable files". The first device it finds with "boot records" is used to load the operating system.
Usually this is the C drive, but could also be a floppy, USB flash memory, or CD.
In order to get the boot records onto a device, a special option must be used when the device is formatted. This boots the boot records in a place where the BIOS knows to look for them.
So, a bootable file (or "bootable device") is a storage device which has been set up with these boot records.