Windows 7: i want to install Windows 7 32-bit from USB (without CD/DVD Drive)

Configuration and Condition of Computer:
* Have a OLD Computer...
* NO CD/DVD Drive
* USB Port is present
* No option to Boot From USB Port
now how to install WIN-7...?

What option do you have in the one time boot menu?

1.CD/DVD
2.Floopy
3.Harddisk

Plug in your USB pen drive & Check in your option 3.

when i select 3 (to boot from USB bootable Drive.... ) it cant....
it boot from HArdDisk.... and opens the Courrupt WinXp OS

Will your USB pen drive show in option 3?

You have to change boot disk PRIORITY ( not boot disk sequence ) to list the usb stick 1st. After the 1st reboot of the install you have to change it back to the hard drive 1st and the usb 2nd.
Or it will just keep booting from the stick over and over again.

First you need to make the USB flash stick bootable by writing the Windows 7 ISO to it using Universal USB Installer with Windows 7 in dropdown menu.

Then access the one-time BIOS Boot menu key at boot given in Theog's post to see if it registers, possibly under HD's.

If not borrow a USB DVD drive, or take out the HD to place alone in another computer to install, then SysPrep to move HD to another computer before moving back to target machine.

No in my bios tr is only 3 option Floppy, CD/DVD and HDD and when is set the priority 3.HDD then....it cant boot from pendrive.... :-(

but their is no option of USB drive ....so that i can set it as a 1st boot drive