Restore MacBook Pro to factory settings without disc

Is there a way of restoring a MacBook Pro to it's factory settings without a disc? I want all files deleted and it to basically be like I just received it from Apple.

I know you can do it with Dell machines - surely you can with Apple machines?

You won't be able to get it back to 100% pre-used state without the discs. The best you can do is delete user accounts & home folders and remove any Applications that didn't come with it by default, but chances are you're going to leave behind some traces in your system Library folder at least.

I would:

1. Backup your data (no-brainer).
2. Create a new temporary user account with Admin privs & delete all of your old ones including the home folders.
3. Use an app deleting utility such as TrashMe to catch as many of the app's preferences as you trash them. There won't be many because most are user specific.
4. Use a system cleaning utility such as OnyX to clean up as many system settings as you can.
5. Look through the Library folders in folders such as Application Support and Receipts. You might also see application specific folders in /Library. This is where it can get tricky because some depend on others for startup functionality, etc so if you don't delete them all the right way, you might have problems.
6. There may also be some driver specific kexts added by 3rd party utilities in your Systems folder. Up to you to figure out which ones these are.
7. When you're satisfied with what you've done, create another generic account with admin privileges, then delete the temporary account. Don't do anything in the generic account other than delete the temp account.

To someone not familiar with OS X, this can be very intimidating. I would suggest going by the Apple store and talking to a Genius to see what your options are. They may sympathize with you and either re-load it for you or give you replacement disks. Tell them yours were damaged.

If you have 10.7 or later, you can reinstall OS X from the recovery partition. Hold ⌘R on startup, erase the OS X partition from Disk Utility, and choose Reinstall OS X.

If your Mac supports 10.8, you can download and install 10.8 from App Store first. 10.7 is no longer available. If you don't have the App Store application, upgrade to the latest version of 10.6 first.

The installation discs that came with Macs didn't usually work with other types of Macs, but the ones that were sold separately did. Apple no longer sells installation DVDs or CDs, but you can still get torrents for them, request them from AppleCare or a service provider, or buy them used.