Suggestion 1: Install .NET Framework Version 3.5
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Please download and install the .NET Framework Version 3.5.
Microsoft .NET Framework 3.5
http://www.microsoft.com/downloads/deta ... laylang=en Then, please test your issue again. If it still persists, please try to take suggestion 2.
Suggestion 2: In-place Upgrade Installation
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Technically, you won’t lose any data to take an In-place Upgrade Installation. In order to avoid any unexpected problem. I suggest you backup your data before taking In-place Upgrade Installation.
1. Start the computer by using the current Operating System.
2. Insert the Windows Vista DVD in the computer's DVD drive.
3. Use one of the following procedures, as appropriate:
• If Windows automatically detects the DVD, the Install now screen appears.
Click Install now.
• If Windows does not automatically detect the DVD, follow these steps:
a. Click Start, click Run, type Drive:\setup.exe, and then click OK.
Note Drive is the drive letter of the computer's DVD drive.
b. Click Install now.
4. When you reach the "Which type of installation do you want?" screen, click Upgrade to upgrade the current operating system to Windows Vista.
Hope it helps.