What could be causing a computer to run constantly with high CPU usage on Windows?

 There are several possible causes for a computer to run constantly with high CPU usage on Windows:

1. Malware or virus: Some malware and viruses are designed to use a high amount of CPU resources, causing the computer to run slowly and the CPU usage to be high.
2. Background processes: Some background processes, such as Windows Update, Windows Search, and Anti-virus software can consume a lot of CPU resources.
3. Programs or applications running in the foreground: Some programs and applications may have a bug or be poorly designed, causing them to consume a lot of CPU resources when running.
4. Outdated drivers: Outdated drivers can cause compatibility issues and lead to high CPU usage.
5. Overheating: High CPU usage can also be caused by overheating, which can be caused by poor ventilation or a malfunctioning cooling system.
6. Memory leaks: A memory leak is a situation where a program or application continues to consume memory even after it is no longer needed. This can cause the computer to slow down and the CPU usage to be high.

To troubleshoot this issue, you can use the Task Manager on Windows to identify which process is causing the high CPU usage. Once you have identified the process, you can terminate it or try to update the related software or drivers. Additionally, you can run a scan with anti-virus software to check if there's any malware on your computer. If overheating is the issue, you can try cleaning the dust from the cooling system or consider purchasing a cooling pad for your computer.