Troubleshooting SQL Server 2012 Setup Error 0x84B30002

Several strategies can rectify the installation error 0x84B30002 for SQL Server 2012:

1. Assess system qualifications: Confirm that your machine satisfies SQL Server 2012's essential criteria, checking the required hardware and software, including OS version, CPU capabilities, memory, and storage space.
2. Deactivate antivirus programs: Antivirus applications might obstruct the installation. Deactivate any antivirus software prior to initiating the SQL Server 2012 setup.
3. Initiate setup with administrative rights: Right-click the installation file and select 'Run as administrator' to guarantee adequate permissions for the installation of SQL Server 2012.
4. Examine the installation medium: If you are installing from a DVD or USB stick, verify that it is neither damaged nor corrupted. Consider copying the setup files to another drive and retry the installation.
5. Inspect the installation logs: The logs can shed light on the nature of the error. Examine the log files located in the %ProgramFiles%\Microsoft SQL ServerH\Setup Bootstrap\Log directory for any detailed error messages.
6. Remove former SQL Server iterations: If previous versions of SQL Server are installed, they should be uninstalled prior to installing SQL Server 2012 to avoid conflicts.
7. Update to current service pack: Ensure that the latest service pack is installed for your operating system before proceeding with the SQL Server setup.