OK first are you trying to restore back to a previous date or are you trying to do a system recovery back to the way the system was brand new?
These are two different issues and are done different ways.
If you are trying to return the system to factory settings like it was new then try the following. Be fore warned as this will most likely format your hd resulting in the loss of all data.
To access the recovery partition do the following...
Power off the laptop.
Hold down the 0 (zero) key and turn the laptop on. Keep holding down the zero key until the TOSHIBA logo appears.
Start tapping the zero key repeatedly at this point.
Stop if the unit beeps or when the TOSHIBA logo disappears.
The screen should flash HDD RECOVERY MODE for a second and then it will load the Toshiba recovery program right from the hard drive.
Note that this erases all data, and reloads all factory default software.