High CPU Usage

Computer Problems → Slow Computer

Having this problem? Work through the steps below in order. Stop when the problem is solved; you do not need to perform every step.

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Common Causes

This problem can be caused by settings, drivers, software, connections, temporary Windows issues or hardware. Start with the simple checks before making major changes.

Step-by-Step Solution

  1. Open Task Manager and sort processes by CPU.
  2. Identify the application or Windows process using the CPU.
  3. Close an unnecessary application or restart it if it is stuck.
  4. Check Startup apps for programs that launch unnecessarily.
  5. Install application and Windows updates.
  6. If usage remains unusually high, investigate cooling, malware and background tasks.
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Important: Before changing drivers, formatting storage, resetting Windows or removing important software, back up important files and make sure you understand what the step changes.

If the Problem Continues

Note what changed immediately before the problem started. Test the affected device or connection with another computer or network when possible. This helps separate a Windows/software issue from a hardware or service issue.

Quick Checklist

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