It doen't tell us much as to whether you ever had system restore running or what happened for it to disappear. The following may not even help but you can try this and see what happens.
Manual steps to turn on System Restore
To turn on System Restore, follow these steps: 1. Click Start, right-click My Computer, and then click Properties.
2. Click the System Restore tab.
3. Click to clear the Turn off System Restore check box (or the Turn off System Restore on all drives check box), and then click OK.
First, from Explore>toolbar>tools>folder Options>view>scroll down and select
'show hidden files and folders'.
and clear 'hide extensions for known file types, ( you may want to undo this
when you are all through with restoring SR.)
Now, from the Start>Run command type in this
%Windir%\INF
and hit enter.
Now, look for this file, SR.INF and when you find it, right click it and
select ' install'.