Oh dear God. Please be careful with free advice. I'm assuming we're talking about Microsoft Windows here?
1) STOP USING YOUR COMPUTER! SWITCH IT OFF NOW!!!!
- Your computer is writing to the disk nearly all the time. Each time it writes something it uses a part of the disk marked as free space. All of your data has been marked as free space, so the more you use it the less change of recovering ANYTHING.
2) DO NOT INSTALL ANY SOFTWARE!
- See Point 1). You do not want to be writing to this disk.
Now, being a little more helpful...
Don't bother with Ubuntu, or BartPE or Knoppix or any of that. It isn't going to help in this situation, as some people have said, your data is not going to be that easy to get back. You have formated the disk, then the system recovery tool is going to have written a whole bunch of new stuff over the top. Again, see point 1) for why this is bad. You have two... well, three options.
1) Take your computer to a data recover specialist and tell them what happened. Expect to pay $$$ for them to get back what they can. It's not likely to be everything.
2) Forget it and move on. Consider it a very painful lesson.
3) If you're comfortable with opening up your PC, or have a mate who knows a little something, then you need to do a few things:
a) Buy, beg, borrow a new HDD for your computer, and some data recovery software. The HDD needs to be the right type so if you can't work it out, get help.
b) Remove the original HDD from the computer and replace it with the new one.
c) Run the "System recovery" (or whatever it's called) that your Mom ran to get your computer working again.
d) Install the data recovery software, then shut down the PC.
e) Set up the original disk as a second drive. Be very sure about this or you'll be writing to the disk again. See point 1) !!
f) Your computer should still start up from the new disk, and then you can run the recovery software against the original disk, MAKING SURE TO SAVE ANY RECOVERED DATA TO THE NEW DISK, NOT THE ORIGINAL.
That will get you everything that is reasonably possible to recover. The only thing left is to thank the data Gods for being merciful and take the lesson to backup your data regularly.
Edit: How are you posting this without a computer?!
Edit 2: I thought of another option to buying a new HDD - if you have a friend with a similar computer who is willing to let you connect your HDD as a second drive, and has (or will let you install once purchased) data recovery software, and has enough free space for the data you will hopefully recover, then you could start at 3) point d).