No,operating System,no Cd,only Usb

Hi,
I did a "Killdisc" on my laptop and then tried to reinstal Windows 7.
When I boot the laptop,I only get a command prompt,saying"NO OPERATING SYSTEM"
I am a bit confused,I tried putting only the boot file see image,with the Microsoft's Windows 7 USB/DVD Download Tool,no go?
So my question,I have windows set up,see images,cannot see where the ISO is?
Could someone,please help me out here...please?
BEFORE I DID THIS,I MADE SOME NOTES HERE:
"Alternatively you can create an ISO file from a Windows disc if you have one. How to geek has a guide on this.
NOTE: The drive will be formatted so make sure you don't have any files on the drive that you wish to keep.
Step One
Once you have your USB drive and ISO file ready to go. Click the following link and download and install Microsoft's Windows 7 USB/DVD Download Tool
Step Two
Insert your USB drive and run the Windows 7 USB download tool - a shortcut should have appeared on your desktop.
Step Three
Select your ISO file to install onto the USB drive and click 'Next'
Step Four
The software gives you a choice of burning the ISO file to a USB drive or DVD. For the purposes of this guide select 'USB'.
Step Five
Now select the USB drive you wish to use from the drop down box and click 'Begin Copying'. You will be presented with a warning that the USB drive needs to be erased, click 'Erase USB Device' and then 'Yes' when asked whether you are sure. Your bootable Windows 7 USB drive will now be created.
Step Six
If you wish you be able to select the version of Windows 7 to install from the one USB drive then open the drive in Windows Explorer and delete the 'ei.cfg' file found in the 'Sources' folder."

 

I have burnt the iso image onto a flash drive,as I have no dvd,I also put the Microsoft's Windows 7 USB/DVD Download Tool onto the flash drive,then when starting,I press F9 and try and boot from flash drive,but it does nothing?
Could anyone help please

 

Check your BIOS setup for drives enabled and sequence. See my discussion in Post #30 here: http://forums.majorgeeks.com/index.php?threads/kick-a-puppy.307422/

 

If you are 100% confident that you have followed the procedure at HowToGeek to the letter then, as has been suggested, check the BIOS boot sequence or the boot order override key you are using, which is usually F8 rather than F9. Have you ever previously managed to boot this laptop from USB?

 

The laptop's motherboard might not support booting from a flash drive. It will still show because the BIOS sees it as a storage device.

 

I got it.
I had to run that tool first,that puts the image on the usb for one.
Thanks for your help.
Im chuffed