Windows 7 features native support for ISO images (Windows disk image Recorder).
There is no need to install special software such as ISO-Recorder or ImgBurn or burning software to burn ISO images, if you do not need extra features.
Insert a blank CD (or DVD) disc in the optical drive. Go to the location where your ISO image is saved. We will show Microsoft Expression Studio 4 ISO as example:

When you select the ISO image in Explorer, you will get the option of “Burn Disk Image” like the Screenshot:
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Click “Windows Disk Burning Tool” ; it will provoke the following window:
Check the “Verify disk after burning” and click “Burn”.
The process will be completed within few minutes.
Note: The is no option is available to set write speed.