Solved Error during creating bootable USB

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Hello all,

I am trying to convert .exe to .iso file and make USB bootable. During creating bootable USB following http://www.sevenforums.com/tutorials/2432-usb-windows-7-installation-key-drive-create.html , there is error massage during command "
format fs=ntfs" , please see attach file.

It occurs on the second run, on the first run i left diskpart during step format fs=ntfs at 1% completed . Trying to format in window yet there is error massage prompted ‘You have not sufficient right to perform this operation’ .

How to make USB bootable again ? Please kindly advise.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Acer Aspire 4740G , Acer Aspire4930
OS
Windows 7 Ultimate 32 bit , Window 7
CPU
Intel(R) Core(TM) i5 CPUM 430 @ 2.27GHz, Intel core duo pro
Motherboard
Acer Aspire 4740 Acer Aspire4930
Memory
2.00 GB,
Graphics Card(s)
NVIDIA GeForce 310M
Sound Card
(1) Realtek High Definition Audio (2) NVIDIA High Definiti
Monitor(s) Displays
Mobile PC Display
Screen Resolution
1366x768
Hard Drives
WDC WD5000BEVT-22A0RT0 ATA Device , 500 GB
Mouse
TECFON

My Computer

Computer Manufacturer/Model Number
Custom
OS
7 ultimate x64
CPU
i7 920 @ 3.5ghz
Motherboard
P6t Deluxe
Memory
6gb corsair dominator
Graphics Card(s)
Gigabyte Geforce GTX 460 1GB SLI
Sound Card
onboard
Monitor(s) Displays
samsung BX2450
Screen Resolution
1920x1080
Hard Drives
Seagate 7200.11 1Tb; WD green EADS 1TB
PSU
corsair tx750
Case
CM HAF 922
Cooling
coolermaster V8 + standard case fans
Keyboard
Logitech Classic Keyboard
Mouse
Logitech G500
Internet Speed
256k :P
@ Schroff87, thank your for suggestion yet there is also have error as following

Windows 7 USB DVD Download Tool.jpg

Prior to use command prompt , i also tried several third party softwares yet most of them support OS .iso not the normal data.

are there any suggestion , please ?
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Acer Aspire 4740G , Acer Aspire4930
OS
Windows 7 Ultimate 32 bit , Window 7
CPU
Intel(R) Core(TM) i5 CPUM 430 @ 2.27GHz, Intel core duo pro
Motherboard
Acer Aspire 4740 Acer Aspire4930
Memory
2.00 GB,
Graphics Card(s)
NVIDIA GeForce 310M
Sound Card
(1) Realtek High Definition Audio (2) NVIDIA High Definiti
Monitor(s) Displays
Mobile PC Display
Screen Resolution
1366x768
Hard Drives
WDC WD5000BEVT-22A0RT0 ATA Device , 500 GB
Mouse
TECFON
tried formatting with other system and successfully reformat .
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Acer Aspire 4740G , Acer Aspire4930
OS
Windows 7 Ultimate 32 bit , Window 7
CPU
Intel(R) Core(TM) i5 CPUM 430 @ 2.27GHz, Intel core duo pro
Motherboard
Acer Aspire 4740 Acer Aspire4930
Memory
2.00 GB,
Graphics Card(s)
NVIDIA GeForce 310M
Sound Card
(1) Realtek High Definition Audio (2) NVIDIA High Definiti
Monitor(s) Displays
Mobile PC Display
Screen Resolution
1366x768
Hard Drives
WDC WD5000BEVT-22A0RT0 ATA Device , 500 GB
Mouse
TECFON
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