How can I reset only the picture settings?

Option 1: Recover Android Data from Google

If you have set up Google account on your Android and enabled synchronization for all data, after factory reset, you can set up your Google account again on the phone. An option during the set up process will allow you to restore all the synced data.

Option 2: Restore Android Data from Backup

Many Android phones are endowed with local back up app or function. If you have backed up data regularly, then, after factory reset, just go to "Settings" > "Back up & restore", and select the latest backup file to restore data from backup.

Method 2: Android Data Recovery after Factory Reset without Backup Unfortunately, you might performed factory reset accidentally without backup, or the backup file lost or failed to be recognized by your phone, or some data couldn't be backed up, etc. If you come across any one of these situations, a professional data recovery software, Gihosoft Android Recovery Free, will do you a favor. With it, you can not only recover photos after factory reset on Android devices, but also other erased data. Moreover, it supports Samsung Galaxy S8/S8 +/S7/S7 Edge/S6/S6 Edge/Note 5/J7/J5, HTC 10/A9/M9, LG V20/V10/G6/G5, Sony, Motorola, Google, Huawei, ZTE, OnePlus, etc.

Fore more info, check this link https://www.gihosoft.com/android-recovery/recover-data-after-factory-reset-android.html

Hey Jim!
You can can not access that phone if you do not know the Pattern.
You have to reset the phone to factory settings.
Here is a link on how to do it.

Good Luck,
JP
http://www.htc.com/hk-en/support/htc-one-mini/howto/386367.html

Step 1 Tap the "Menu" key from the home screen and then tap "Settings."
Step 2 Go to "Privacy" and tap "Factory Data Reset" to review the Factory Data Reset information.
Step 3 Review the Factory Reset options. Place a check next to "Format USB Storage" to clear your device of user data, such as music, pictures and other account settings.
Step 4 Review the disclaimer and verify your changes before tapping "Reset phone."
Step 5 Tap the "Erase Everything" or "Yes" buttons to confirm the reset the phone to factory settings. The device initiates the restoration process to the original factory configuration.

Performing a factory reset
Performing a factory reset erases all of your settings and account information and restores your
1 Press home to go to the Home screen. 2 Highlight settings , and then press select to display the Settings screen.
3 Highlight factory reset, and then press select .
4 To continue with the reset, select factory reset. To cancel the reset, select back.

• 5 When prompted, highlight yes to confirm that you want to reset your player, and then press
  select
  

Try this before you do a factory reset by loading the firmware again.

If you set a pass code (or pattern) that you cannot remember, please enter the wrong password (10-20 times) until you are prompted to sign in via your google account. Please note, this will only work if you have already setup your google account on the tablet. If you have not set up a Google (or Gmail) account on the tablet, you will have to perform a firmware install, which will revert the tablet back to factory settings.

Support Troubleshooting Guide

Follow these steps to reset your Chromebook to its original factory state:
Click the status area in the lower-right corner, where your account picture appears.
Select Settings and click Show advanced settings at the bottom of the page.
Find the "Powerwash" section and click Reset.
In the dialogue box that opens, select Restart.
WARNING: All data stored on your Chromebook such as downloaded files, photos, owner permissions, and saved networks, will be deleted for all accounts when performing a factory reset.

if you used your Google account as a default then on your phone go into settings, accounts, and add your Google account, and then sync your contacts etc. As for your pictures and your videos, if the device was factory reset then you may have lost them. Have you checked your SD card by connecting your smartphone to your computer?

If you have Google+ or Dropbox, both services offer instant upload for your media so you can see if they saved your files, if not you are out of luck on a factory reset.

Are you restoring back to Factory Setting simply because you forgot the password? Please tell me NO. If so, that is not what you want to do. Resetting to Factory Settings will cause you to lose all your documents, music, pictures & videos unless you have them backed up somewhere outside of the computer. If all you need is the password removed, try turning off your machine, then turn it on and immediately hit the F8 key repeatedly until you see the SAFE MODE option. Select Safe Mode and let it boot. When the log in screen appears you will see the account for which you forgot the password and the Administrator account. Select the Administrator account (hopefully you didn't password protect it and forgot it also). If you log in successfully with the Administrator account click Start/Control Panel/User Accounts. When you are in the User Accounts select the account for which you forgot the password, then select the option to Remove Password. Now reboot your machine.

You can unlock LG p500 screen pattern using your google acount, but if you already set it in your phone. To unlock lg phone with google account you just need to type any wrong pattern 5 times then your phone will be asking your google account and after you insert that google account you can setup new screen patern for your phone. Unfortunately if you don't ever setup google account in your phone, you only can unlock it with factory reset methods. For the details about this process you can see at here at page 21 and soon. I hope my solution can solve your problem.

You don't have to reprogram anything with an ipod, the software are giving you problems, you can reset it back to factory settings(default settings) ie. "Restoring iPod to factory settings". All your data will be deleted upon reseting to default settings. Reference link from Apple

How to reset iPod
If you don't know which iPod is yours, have a look at this list.
LINK

Hope it helps.