Troubleshooting the 0xC0000005 Application Error in Windows Vista

To address the 0xC0000005 application error in Windows Vista, follow these steps:

1. Ensure Windows Vista is Current: Verify your system has the latest updates by navigating to Start > Control Panel > Windows Update. Check for any available updates and apply them.
2. Conduct a Malware Scan: This error may stem from malicious software. Use your antivirus program to run a thorough scan and eliminate any threats.
3. Inspect Your RAM: Defective memory can cause this error. Utilise the Windows Memory Diagnostic tool to test your RAM for errors. Access this tool via Start > Control Panel > Administrative Tools > Memory Diagnostics Tool.
4. Modify DEP Settings: Data Execution Prevention (DEP), while a protective feature in Windows Vista, might trigger this error. Adjust DEP by going to Start > Control Panel > System > Advanced System Settings > Performance Settings > Data Execution Prevention, and select 'Turn on DEP for essential Windows programs and services only.'
5. Reinstall the Problematic Application: If a specific application is causing the error, reinstall it to rectify any corrupt files or configurations.
6. Use System Restore: Should the above methods fail, consider restoring your system to a prior state before the error occurred. Navigate to Start > Control Panel > System and Maintenance > Backup and Restore Center > Restore my computer to an earlier time.