windows xp wont boot from usb bootable device

[Immortal_3]

so i cleaned, formatted and partitioned my usb flash drive, and i plug it into my computer. im trying to get hirens boot cd to boot up so i can reset my administrator password. at first i was getting an invalid partition table error, now it reads the usb as a bootable device but when selected wont run and gives me a no bootable device found. do i only need to move the iso file or am i suppose to open up the iso and copy the files over?

 

[hang-the-9]

You can't just copy the ISO file to a disk, an ISO disk image is an image of a disk, you need to extract that onto a disk and make it bootable. Get an ISO to USB utility and use that, or just burn the ISO file to a disk (not the file, actually create a disk using the ISO disk image file).

 

[MikeLevin]

As mentioned above, you definitely need to create USB booting device properly, there are couple good programs even from Microsoft, that will help you to create boot USB