Analysis Toolpak add-in

I have tried following the steps below to install the Analysis ToolPak onto my Excel. 

1. Click the File tab, click Options, and then click the Add-Ins category.

   If you're using Excel 2007, click the Microsoft Office Button  , and then click Excel Options

2. In the Manage box, select Excel Add-ins and then click Go.

   If you're using Excel for Mac, in the file menu go to Tools > Excel Add-ins.

3. In the Add-Ins box, check the Analysis ToolPak check box, and then click OK.

   • If Analysis ToolPak is not listed in the Add-Ins available box, click Browse to locate it.

   • If you are prompted that the Analysis ToolPak is not currently installed on your computer, click Yes to install it.

However, when I reach the stage where I am prompted to install the Analysis ToolPak onto my computer, I click Yes and receive the following:

Error 1706: Setpud cannot find the required files. Check your connection to the network, or CD-ROM drive.

I need a solution urgently as I have a deadline on the work I'm trying to complete.

Thanks,

Aleks Duvnjak