It sounds like you're experiencing an issue where a software application is running in the background after attempting to open a corrupt and recovered file, but the main window of the application doesn't appear, preventing you from working. This issue persists even after terminating all software activities from the task manager, restarting your system, or reinstalling the software.
Here are a few additional steps you can try to resolve the issue:
1. **Check for Updates**: Make sure that both the application and your operating system are up-to-date. Sometimes, software updates can address compatibility issues or bugs that may be causing the problem.
2. **Run in Safe Mode**: Boot your computer into Safe Mode and try opening the application again. Safe Mode loads only essential system processes and drivers, which can help identify if the issue is caused by a third-party application or driver conflicting with the software.
3. **Disable Startup Programs**: Some background applications or services may be conflicting with the software. Try disabling unnecessary startup programs or services using the System Configuration tool (msconfig) on Windows or the Users & Groups preferences on macOS.
4. **Reset Application Preferences**: If the application allows it, try resetting its preferences or settings to default. This can sometimes resolve issues related to corrupted settings files.
5. **Check System Resources**: Ensure that your system has enough resources (CPU, memory, etc.) available to run the application. Insufficient resources can cause applications to hang or not respond properly.
6. **Contact Support**: If the issue persists after trying the above steps, reach out to the software developer's support team for further assistance. They may have additional troubleshooting steps specific to their software or be able to provide a solution or workaround for your issue.
By systematically going through these steps, you should be able to diagnose and resolve the issue with the software application not opening its main window after attempting to open a corrupt and recovered file.