Some Dell laptops did not ship with restore partitions, if it did using Ctrl + F11 at boot will get you to the restore function.
If the system was ever repaired using the "fixmbr" command or was reinstalled using the CD, the restore function will be broken if it had it.
If it does have the restore partition, the disk will have 3 or 4 partitions, not 2, unless someone deleted one or more of them in the past.
If it has the restore partition but has been "broken" as stated above see this for information on repairing the mbr to restore the function. The restore partition has to be intact for this to work, if the partition was deleted or never present this article will do no good.