(SOLVED) a way to use a C:// drive in a new computer without reinstalling Windows?

[Liam]

I don't understand. You just said you were going to "install a new Windows 7 on a new hard drive". Just do that, and use the new windows. You can keep your old hard drive plugged into your computer, so you can still access all the old files.

I do this every few years because windows slows down over time in my experience. It's really not a big deal. Makes things feel fresh again.