Installing a new hard disk requires that you install Windows all again, from start. To do that, you need the Windows installation disc. Do you have it, or are you one of laptop owners who only have it in a secret place hidden on HDD?
There are Image File copiers, through which you may try to move your everything present, but I would recommend the hard way: get yourself a clean install.
Not knowing your present disk, I would roughly say that you need to double the capacity, at least. You MUST safe copy your personal material on a USB stick or on DVD or something, since they won't be available on the new clear disk. Cloud is an option, but I wouldn't say I trust it. Physical is physical, period.
I agree with kemical, mostly the problem is that you have a lot of garbage. Run CCleaner with default settings. It's a very safe and secure program, free of charge, also run the registry clean-up, be sure to have a safety copy made. But this all goes for the old HDD.
A bit confusing, do you want to make a new build, or want to restore old?