Fix: Lenovo System Update Service using CPU at a high rate

by Radu Tyrsina
Radu Tyrsina
Radu Tyrsina
CEO & Founder
Radu Tyrsina has been a Windows fan ever since he got his first PC, a Pentium III (a monster at that time). For most of the kids of... read more
Affiliate Disclosure
  • Many Lenovo IdeaPad and ThinkPad users have reported issues where the System Update Service uses CPU at a high rate.
  • The issue is caused by a Windows 10 bug, which can extrapolate to other important functions of your system.
  • There aren't many alternatives for fixing it, short of removing the app altogether

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The Lenovo brand is popular globally, renown for its efforts at churning out a veritable line of quality electronics and PC hardware. Responsible for several tablets, workstations, storage devices, IT management programs/software, and servers, the System Update Service is of concern to us today.

Many Windows 10 users have complained about their PCs using a much higher CPU rate than normal upon using the System Update Service. Because this update is supposed to ease computer processes, it’s quite worrying.

The Lenovo System Update Service is a pre-installed package for Lenovo PCs. It downloads and installs updates for drivers, BIOS, and software. A remote Lenovo server processes these updates automatically for appropriate devices running Windows 7, Windows 10, and Windows 11.

There have been reports of increased fan noise for IdeaPad and ThinkPad users. However, it’s less likely for desktop users to notice the issue.

Without further ado, let’s highlight the solution steps to fixing the problem.

What can I do if Lenovo System Update Service has high CPU usage?

1. Use the Task Manager

  1. Open the Task Manager by pressing CTRL+ SHIFT + ESC.
  2. Scroll down for the SUService.exe process and end the task.

2. Uninstall the Lenovo System Update service

  1. Open the Windows tab by pressing Win + S.
  2. In the search bar, enter the term Lenovo.
  3. Navigate and click on Uninstall.
  4. On the next screen, navigate to Lenovo System Update and click on it.
  5. Click on Uninstall.

Unfortunately, there aren’t many fixes for this issue, short of uninstalling the app or ending the process from the Task Manager. So far, the only CPU overuse instances cited have been by users running Windows 10 on their Lenovo devices. So, it’s safe to say that Windows 11 users are exempted from this problem.

So far, finding quick software fixes for Lenovo devices is a bit tricky, because there’s no official customer support forum like there is with Microsoft. Instead, they have an FAQ-style how-to page.

The Lenovo System Update Service is caused by a software bug and is most peculiar to devices that have a pre-installed Windows 10 Lenovo image.

If you’ve been having issues with the SUService.exe process using up a high CPU rate, then the chances are that your PC’s been slow and lagging. It’s also likely that your device has been overheating, the primary symptom of CPU overuse.

The SUService.exe program is not a core Windows file. It doesn’t even show up in a visible window. So, closing it won’t affect your system negatively. It also has a digital signature.

However, you may want to consider installing the Lenovo Vantage deployment solution. It’s more stable than the System Update Service and serves the same purpose.

You can also check out some software that can help you fix CPU overuse issues.

You should note that the SUService.exe process is not unique. It’s possible to have malware disguising as the real thing especially. To be doubly sure, you can check out the local path, it’s advisable to run an antivirus scan.

Thank you for reading this article, we hope it’s been an informative read! Please share your thoughts in the comments section below.

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