Is one process eating up nearly all your CPU’s resources? Here’s how to fix high CPU usage.
The central processing unit (CPU) is a PC’s brain. All of the system’s major components, like the graphics card and RAM, rely on instructions that come from the CPU. A properly functioning processor is a critical part of every gaming PC.
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All processors have limits, and it’s normal for high-intensity games and applications to hit those limits without badly impacting performance. However, abnormally high CPU usage can cause the computer to stutter, become unresponsive, or crash.
If your computer seems to overwork its CPU even when high-intensity applications are closed, it may indicate a deeper problem.
1. Reboot Your PC
Before trying anything else, try restarting your PC. This piece of classic troubleshooting advice often leads to effective results. A reboot can clear out temporary files and potentially resolve slowdown in long-running processes. If that’s the only problem dragging down CPU performance, rebooting is likely to solve the problem.
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2. End or Restart Processes
If rebooting doesn’t reduce abnormally high CPU usage, open the Task Manager. Here, you can track processes that use CPU resources and find out what your computer is actually doing with those resources.
Note that full-screen programs like games will sometimes hide the Task Manager behind their own window). To prevent this, click “Options” in the Task Manager’s top menu bar and select “Always On Top”. If you have a second monitor, you can also just drag the Task Manager window to it.
In the Task Manager, click the Processes tab at the top. Click on More Details at the bottom of this tab to reveal background Windows processes. Look for the “CPU” column near the top of the Processes tab and click it to order by CPU usage:
You can expect high CPU utilization when playing some games, running a video-editing or streaming application, performing an antivirus scan, or juggling many browser tabs. If you’re dealing with this kind of everyday high-CPU usage situation, you should close all background programs and tabs you aren’t using, then return to Task Manager and see if the situation has changed.
High CPU usage while multitasking can be normal. Modern CPUs handle multitasking situations by splitting processes between multiple processor cores, which work through different instruction threads simultaneously.
3. Update Drivers
If a process is still using too much CPU, old or suboptimal drivers may be at fault. Drivers are programs that control particular devices connected to your motherboard. Updating your drivers may eliminate compatibility issues or bugs that cause increased CPU usage.
Open the Start menu, then Settings. Click Updates & Security, then the “Check for Updates” button. This will update critical drivers. Graphics card manufacturers also provide utilities (such as NVIDIA GeForce Experience for GPUs) which may improve overall performance when playing games.
Do not use third-party software for updating drivers. You may find companies advertising free driver updates on the Internet. The worst of these install malware on your computer. The best of them are simply redundant because Windows is perfectly capable of updating drivers on its own.
In some rare cases, updating your BIOS version can resolve high CPU usage problems. The BIOS (Basic Input Output System) is motherboard firmware that issues instructions to the computer’s other components during start-up.
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