I am not sure, but when using XP Home I believe Windows default Disc Cleanup could not remove the latest R.P.,
and the only way to remove it was to stop/kill/break/whatever some service or other to disable Restore Points and monitoring.
As soon as you enabled it you had no options - EVERY accessibly NTFS partition instantly had a new R.P.
and you have to go around manually disabling monitoring on every partition that should not have that HDD and CPU resource hog.
The last and final R.P. which is not deleted was brand new between 1 second ago and 24 hours ago
(unless a registry key that Google remembers has altered how often they are created).
It really is a matter of luck if a single restore point can take you back to a pre-disaster era if it remembers only the last few seconds.
Three weeks ago I unleashed essential patches when I concluded work that required a stable non-varying system.
Then I started a new project which also required stability and a week ago I recognised a degradation of performance due to those updates.
Now I have finished that project I am restoring the system from the image captured just before the patches were allowed in,
and I will carefully observe each patch as I allow it to enter, and knock it out if that is the culprit.
Anyone in my situation that used Restore Points and only had the latest one that was one day old would have no hope whatsoever.
Often I have seen an application create a Restore point to create a "back to sanity" fall back position,
and then create more restore points and critical points during the installation process.
I think I have seen Windows Security Patches create a "back to sanity" fall back position before the updates,
and I feel there were more Restore Points for each and every patch that arrived courtesy of Black Patch Tuesdays.
I think the last Restore Point that is preserved by both CCleaner and Disc Cleanup is almost never a "back to sanity" fall back position.
and the day after a Black Patch Tuesday you may need to go back past several "back to sanity" fall back positions.