You ask if installing the Vista transformation pack could do harm to your computer.

Although I don't know, (not having done it myself), I suspect you should back up anything you cannot afford to lose in your Windows Operating System before you try such a thing. Often such "transformation" will make major changes to the OS, and returning from those changes can be very difficult.

I see you have also installed Ubuntu. I wonder why you are attempting all these different Operating Systems on the one machine. Too much could break something.

Mark