How to restore factory settings - Dell XPS M1330 Laptop

You can resort to iTunes to restore iPhone to factory settings. Just follow below steps to do that.

Restoring iPhone to Factory Settings with iTunes

iTunes enables users to back up data to iTunes and restore iPhone to factory settings. Before you start restoring iPhone to factory settings, please note that you need to install the latest version of iTunes on your PC or MAC. Then go to Settings > iCloud to turn off Find My iPhone. Now, the detailed restoring steps are as follows.
1. Plug iPhone into the computer with the USB cable. The iTunes on your computer will automatically launch. If not, double-click the icon to start it.
2. Click the name of your iPhone at the upper right corner of iTunes, and then the information of your iPhone will be shown. Click the "Restore iPhone" button in the window to start.
3. iTunes will ask whether you want to back up iPhone before restoring. You'd better choose "Yes" for the reset will erase the contents in your iPhone. Then iTunes will start restoring your iPhone to factory settings.

3. Click Restore again to confirm. Then iTunes erases your iPhone and installs the latest iOS or iPod software. After you restore your iPhone to factory settings, it will restart. Now you can set it up as new.

For more methods, check: How Do I Restore My iPhone to Factory Settings

Depending on the brand and year it was made there may be a factory partition that will restore computer back to factory defaults, if not then a reinstallation of windows will be necessary, If factory partition is available just do a search o Google with your make and model # such as : How to restore an Acer Aspire 7425 to factory defaults using recovery partition

This WEB site shows how to do a factory restore.
http://www.tomshardware.com/forum/13678-63-restore-acer-aspire-factory-settings

Go to the ASUS WEB site for instructions -
ASUS Notebook Restore to Factory Settings
http://en.kioskea.net/faq/4162-restore-an-asus-netbook-to-factory-settings

Straight from the manual:
Restore factory settings To restore the phone back to factory conditions, select Menu > Settings > Rest. factory sett. and from the following options: 1. Restore settings only - to reset all preference settings without deleting any personal data 2. Restore all - to reset all preference settings and delete all personal data, such as contacts, messages, media files, and activation key
Best of luck!

ACER PC Restore to factory settings

• Run Acer eRecovery Management
• Copy the Acer factory default backup disk Image
• Create backup of the system
  • Create a complete backup
  • Creating an incremental backup
  • Erase a backup point
• Using the option ‘‘Burn Disk’’
  • Burn a backup disc with the factory default settings
  • Burn a backup disc with the parameters of user
  • Copy the current system configuration to disc
  • Burn a disc backup software
• Restore the system
  • Restore system to factory default settings
  • Restore system from backup user
  • Recover the system from CD / DVD
  • Re-install applications / drivers
  • Other means of System Restore
  • No Restore CD / eRecovery / password / ALT + F10 or F10

Restoring Default Settings
You can restore the CK31 to factory default settings from
Intermec Settings.
Note: Using the Restore Defaults option restores all parameters
including network settings. When you choose to restore defaults,
you erase the registry. As a result, you may lose network
communications.
To restore factory default settings
1 From Intermec Settings, select Device Settings > Restore
Defaults.
2 Select Restore Defaults and choose the Run App button. A
Run Application dialog box appears asking if you want to run
the restore defaults program.

www.portablesolutions.com

1 way: Select Menu > Settings > Restore factory settings

or:

*#7780# reset to factory settings.

Restore Factory Default Settings When you restore factory default settings to the base station, you clear your Internet connection settings and any special base station configurations that you have established. After the restore is complete, you will need to reconfigure your base station settings or restore these settings from a backup file. You should restore the original factory default settings only under the following circumstances: O You are experiencing serious problems with your base station, and resetting the base station does not fix the problem. O You cannot remember your base station password. In this situation, you must restore the factory default settings by using the Restore button on the base station, and then use the default password admin to log on to the Base Station Management Tool. To restore factory default settings 1. Open the Base Station Management Tool, and then click Management. 2. On the Management menu, click Back Up and Restore Settings. 3. Under Restore factory default settings, click Restore Factory Default Settings. While the original factory default settings are being restored to the base station, the Power light on the base station turns orange. When the light is solid green, the settings have been restored. If you want to open the Base Station Management Tool after the settings have been restored, type admin as the password on the Logon page. Do not attempt to log on to the base station until the settings are restored and the Power light on the base station is solid green. After you restore the factory default settings to the base station, you should navigate to each page of the Base Station Management Tool and reestablish the network settings you want, or restore the base station settings by using a backup file. For information about creating a backup file of your settings, see the following section. Be sure to establish your unique base station password as soon as possible after restoring the factory default settings to prevent unauthorized users from logging on. For more information, see “Change the Base Station Password.” please rate this answer, thanks

You have not explained what is wrong with your computer.
Is the laptop working, does it boot up into Windows?
What are you trying to restore?
Are you trying to get into a previous Restore Point?
The Access button takes you into the BIOS, you can change the BIOS settings back to the Default settings (ie the factory default settings).
It is difficult to offer a solution without knowing the exact nature of the problem.