Hi,
It is Business Edition, not Professional, in Vista.
You can also borrow and use a Microsoft Retail or Microsoft OEM System Builders Vista DVD, that contains the files for the various Vista Editions (Home Basic, Home Premium, Business and Ultimate) to be installed. The Product Key on your Computer / Laptop case determines which Edition is installed.
Other Manufacturers' Recovery DVDs are not to be used for the above purpose.
And you need to know the 'bit' version for Vista, as 32bit and 64bit Editions come on different DVDs.
Here is how to do a clean install of Vista, using a Microsoft Vista DVD:
Windows Vista Home Premium 64 Bit Download
'How to Do a Clean Install and Setup with a Full Version of Vista'
And once the Operating System is installed, go to your Computer Manufacturer's website and obtain the latest Drivers for your particular Model Computer or Laptop.
And phone Activation may be required when using the above clean install Method.
'How to Activate Vista Normally and by Phone Activation'
Cheers.
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