Battlefield 3 How to manually uninstall

Backup the save data:

1. Click the Start button and select Documents
2. Right-click the Battlefield 3 folder and select Cut
3. Right-click on your desktop and select Paste
4. To restore your Battlefield 3 save games and settings, move this folder back into the Documents folder

Delete the game files (in the default location):

1. Click the Start button and select Computer
2. Select the C: drive folder
3. Select the Program Files folder
   Note: On 64bit systems, select the Program Files (x86) folder
4. Select the Origin Games folder
5. Right-click the Battlefield 3 folder and select Delete

(Warning: Changes to the registry can cause your computer to operate improperly, so please follow these instructions exactly as they are written.)

Backing up the registry:
Perform the steps listed below to back-up the registry so that should something go wrong, you can restore your system back to a working state:

1. Click the Start button (Windows button on Windows Vista) on the Windows Taskbar.
2. Click Run.
3. Type regedit into the available text field, and click OK.
4. Select File, then Export
5. Select All under Export Range.
6. Type backup into the File name field, and click Save.

Delete the registry keys:

1. Expand the HKEY_LOCAL_MACHINE folder
2. Expand the SOFTWARE folder
   Note: On 64bit systems, first expand the Wow6432Node folder, then continue
3. Expand the EA GAMES folder
4. Right-click the Battlefield 3 folder and select Delete
5. Collapse the EA GAMES folder
6. Expand the Electronic Arts folder
7. Right-click the Battlefield 3 folder and select Delete
8. Collapse the Electronic Arts folder
9. Right-click the ESN Launcher folder and select Delete
   Note: This folder may have a version number (such as 0.79.0) after the name or there may be multiple folders with the same name
10. Right-click the ESN Sonar folder and select Delete
    Note: This folder may have a version number (such as 0.79.0) after the name or there may be multiple folders with the same name
11. Expand the Microsoft folder
12. Expand the Windows folder
13. Expand the CurrentVersion folder
14. Expand the Uninstall folder
15. Right-click the {76285C16-411A-488A-BCE3-C83CB933D8CF} folder and select delete
16. Collapse the Microsoft folder

Delete the uninstall files:

1. Click the Start button and select Computer
2. Select the C: drive folder
3. Select the Program Files folder
4. Select Tools, then Folder Options, then View, then select "Show hidden files and folders"; you may need to press the Alt key to make the Tools option appear
5. Select the InstallShield Installation Information folder
6. Right-click the {76285C16-411A-488A-BCE3-C83CB933D8CF} folder and select delete