It seems like you're facing an issue with high memory usage on your system, even though no actual processes appear to be running. This could be caused by several factors, and it's important to go through a troubleshooting process to identify and resolve the issue. Here are some steps you can take:

1. Check Task Manager or Activity Monitor: Open your task manager (on Windows) or Activity Monitor (on macOS) to get a detailed view of which processes are consuming memory. Make sure to check the option to show all processes, including background processes.

2. Look for Hidden Processes: Sometimes, certain processes or malware may hide themselves from the standard process list. Consider using specialized anti-malware software to scan your system.

3. Check for Resource-Intensive Services: Some services or background tasks can consume a large amount of memory. Look for any services that are using an unusually high amount of memory and investigate them further.

4. Update or Reinstall Drivers: Faulty or outdated drivers can sometimes lead to memory-related issues. Ensure that all your drivers (especially graphics and chipset drivers) are up to date.

5. Check for Memory Leaks: A memory leak in a program can cause it to continuously consume more memory. If you've recently installed new software, try uninstalling it to see if the problem persists.

6. Monitor Disk Activity: In some cases, high disk activity can lead to high memory usage. Monitor disk activity while observing memory usage to see if there's a correlation.

7. Check for Software Updates: Ensure that your operating system and all installed software are up to date. Developers often release updates that fix memory management issues.

8. Run a Memory Diagnostic: Many operating systems have built-in tools for checking the integrity of your system's memory. For example, Windows has the Memory Diagnostic Tool.

9. Review System Logs: Check system logs for any error messages or warnings related to memory usage. This might provide clues about what's causing the issue.

10. Consider Hardware Issues: It's possible that there may be a hardware problem, such as a failing RAM module. Running a memory test (like MemTest86) can help identify such issues.

11. Reboot the System: Sometimes, a simple restart can clear out any lingering memory issues.

12. Monitor Over Time: Keep an eye on memory usage over a period of time to see if it consistently remains high or if it spikes at specific times or during specific activities.

If you've gone through these steps and still can't identify the issue, you might want to consult with a professional IT technician or seek help on a technical forum or community specific to your operating system. They may be able to provide more targeted advice based on the details of your system and any error messages you encounter.