The CPU (Central Processing Unit) is responsible for executing tasks, and when it reaches 100% usage, Windows may struggle to run smoothly. High CPU usage in Windows 10 can lead to sluggish performance, system freezes, overheating, and decreased battery life in laptops. Well, Several factors such as background applications, faulty drivers, malware, or misconfigured system settings, can contribute to excessive CPU consumption. To address this, you can try closing unnecessary applications, restarting your system, scanning for malware, updating drivers, and disabling startup programs. Here is How to fix High CPU Usage in Windows 10.
How to Fix High CPU Usage in Windows 10
High CPU usage in Windows 10 usually means your computer’s central processing unit (CPU) is working harder than usual, potentially leading to slow performance, lag, and even crashes. Several factors contribute to this issue, including running too many applications, outdated software, malware, or hardware issues.
- Background Applications – Unnecessary apps running in the background can consume excessive CPU power.
- Faulty or Outdated Drivers – Incompatible or corrupt drivers can trigger system resource mismanagement.
- Malware or Virus Infections – Malicious software can run hidden processes that consume CPU cycles.
- Corrupt System Files – Damaged or missing Windows system files can cause abnormal CPU behavior.
- Too Many Startup Programs – Multiple applications launching at startup can overload the CPU.
- System Processes Running Excessively – Certain Windows processes, such as Windows Search Indexer or the Runtime Broker, may overuse CPU resources.
Restart Your Computer
After installing updates, Windows may require a restart to finalize the installation and optimize system performance. Restarting your computer helps terminate background update processes, refresh system configurations, and clear temporary resource-heavy tasks.
- Click Start, then select Restart.
- Allow the system to reboot and settle for a few minutes.
- Open Task Manager by pressing Ctrl + Shift + Esc and check CPU usage.
- If CPU usage remains high, continue with the next steps.
Wait for Windows to Finish Post-Update Processes
After an update, Windows runs several background tasks such as indexing files, optimizing system settings, and installing additional components. These tasks can temporarily increase CPU usage but typically stabilize within a few hours.
- Let your system run for 30-60 minutes without interruptions.
- Open Task Manager and monitor CPU usage under the Processes tab.
- If CPU usage remains consistently high beyond a few hours, move on to further troubleshooting steps.
Check for Additional Updates
Microsoft frequently releases follow-up patches to fix performance issues caused by previous updates. Checking for additional updates ensures that you have the latest fixes.
- Press Win + I to open Settings.
- Navigate to Update & Security > Windows Update.
- Click Check for updates.
- If updates are available, install them and restart your PC.
- After rebooting, monitor CPU usage in Task Manager.
Disable Unnecessary Startup Programs
Some applications launch at startup after an update, increasing CPU load. Disabling them can free up system resources and reduce CPU consumption.
- Open Task Manager (Ctrl + Shift + Esc).
- Navigate to the Startup tab.
- Right-click on unnecessary programs and select Disable.
- Restart your PC and monitor CPU usage.
Run System File Checker (SFC) and DISM to Fix Corrupt Files
Windows updates can sometimes corrupt system files, causing CPU inefficiencies. Running SFC and DISM scans can help repair them and optimize performance.
- Press Windows key + S and type cmd, Right-click on the command prompt select run as administrator,
- Run the system file checker command sfc /scannow to scan and fix corrupt system files,
- Next, run the DISM restore health command DISM /Online /Cleanup-Image /RestoreHealth to scan and repair the Windows image.
- Let the scanning complete 100%, once done reboot your computer and check if the CPU usage comes normal.
Disable Windows Search and Superfetch (SysMain) Services
The Windows Search and Superfetch (SysMain) services can consume high CPU resources, especially after an update. Disabling them can improve performance.
- Press Win + R, type
services.msc, and press Enter. - Locate Windows Search, right-click it, and select Properties.
- Change the Startup type to Disabled and click stop then Apply.
- Repeat these steps for SysMain.
- Restart your PC and monitor CPU usage.
Perform a Clean Boot
A clean boot starts Windows with only essential services, helping identify if a third-party app is causing CPU spikes.
- Press Win + R, type
msconfig, and press Enter. - Go to the Services tab and check Hide all Microsoft services.
- Click Disable All, then switch to the Startup tab in Task Manager.
- Disable all startup programs and restart your PC.
- If CPU usage improves, re-enable services one by one to find the problematic software.
Uninstall the Problematic Windows Update
If high CPU usage starts after a specific update, uninstalling it may resolve the issue.
- Press Win + I to open Settings.
- Go to Update & Security > Windows Update.
- Click View update history > Uninstall updates.
- Locate the recent update that caused high CPU usage, right-click it, and select Uninstall.
- Restart your PC and monitor CPU usage.
Update or Roll Back Drivers
Sometimes, Windows updates cause conflicts with existing drivers, leading to increased CPU usage. Updating or rolling back problematic drivers can restore system stability.
- Press Win + X and select Device Manager.
- Expand Display adapters, Network adapters, and Processors.
- Right-click each device and choose Update driver > Search automatically for drivers.
- If the issue started after an update, select Properties > Driver > Roll Back Driver.
- Restart your PC and check CPU usage.
You can also visit the device manufacturer’s website to download and install the latest Windows 10 driver.
Adjust Power Plan Settings
Windows power plans can affect CPU performance. Setting the system to High Performance can prevent unnecessary CPU throttling, but for users experiencing excessive CPU usage, choosing Balanced or Power Saver mode can help.
- Press Win + R, type
powercfg.cpl, and press Enter. - Select Balanced or Power Saver instead of High Performance.
- Click Change plan settings > Change advanced power settings.
- Expand Processor power management > Maximum processor state.
- Set the value to 80-90% and click Apply.
Scan for Malware and Viruses
Malware infections often run hidden background processes that consume high CPU resources. Some types of malware disguise themselves as system files, making them difficult to detect manually.
- Press Win + I to open Settings.
- Navigate to Privacy & security > Windows Security > Virus & Threat Protection.
- Select Full Scan or select Microsoft Defender Offline scan for an in-depth check.
- Remove any detected threats and restart your PC.
Did these solutions help fix Windows 10’s high CPU usage problem? share your feedback on comments.
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