Undo changes on your computer

In searching I found Microsoft SteadyState and it is discontinued program for Windows XP.
It is like a virtual environment where you can use your computer but after a reboot all changes are undone, deleted files are restored, in essence your computer is restored back to the previous state(before the virtual environment).

Does anyone know of any free similar program?
I would like it to replace the need to re-image every time I want to try something that could risk my computer.

Thanks!

Okay it is good to know that I am not the only one that has been searching for an app like this.

But I have also tried the "Try and Decide" of Acronis by downloading a trial - I could not understand what it was doing, many files were created on my dekstop maybe buffer, so eventually I decided to just stop it and have not tried it again since.
But even if it does work, it is paid and I am looking for a free solution.

However, if you do understand how "Try and Decide" works I will be happy if you can explain it in a nutshell.

Oh okay thanks for the explanation!

But still I must find a free solution, for now it is the only option.

whs said:

There is always this one: System Restore Software - Restore on Reboot | Faronics Deep Freeze

It is not free...

HammerHead said:

I struck out looking for that kind of app.

I know it is frustrating, but if I find a free program I will let you know

It's just that I can't spend money on a computer program now.

for the time being, a free solution is to be used.