General Computer Questions

How do i check the history of my computer if it has been deleted

is there a list available ? and how do I find it? thank you.

how to send a clean copy doc without allowing recepient to see the doc history(ie marked copy)

I want to restore my system to Sept, ’06 & z “Sys.Restore” only lets me go back 3 months for restore dates. CAN I restore back to 9.1.06?