When idling, laptop runs background programs with 'Very high' power usage, leading to loud fans

The user's Acer Aspire 7 laptop experiences frequent fan whirring when idle, indicating high power usage from background processes. The primary culprit is often MsMpEng.exe, associated with the Antimalware Service Executable, presumably Windows Defender. Even with Defender seemingly idle, this process consumes significant resources. Google Chrome, despite inactive tabs, also contributes to high power consumption. The user also observes high power usage from AggregatorHost.exe and msedgewebview2.exe, even without using Microsoft Edge. The issue happens frequently with various programs, including wsappx, creating a persistent problem. The user has tried adjusting Windows Defender settings without success. They have searched online and found many others experiencing similar issues. The user believes the problem is more complex than just a single program. They seek solutions to reduce background processes and fan noise. This power drain severely impacts the laptop's efficiency. The user is frustrated with these resource-intensive, background functions.