SOLVED! ACPI\LEN0078\5&2890D699&0 Missing Driver

Once it comes to ACPI\LEN0078\5&2890D699&0 missing driver, the best solution is to update driver using Lenovo Vantage and Lenovo Service Bridge. Also, you could download the ACPI driver, downgrade Windows and so on. You don’t know how to carry out the solutions on your own? In that case, this article could help you out.


Update Missing Drivers

  • Step 1: Launch browser then visit Lenovo’s support page for the X230 ThinkPad.
  • Step 2: Scroll down to the Supported Systems to see if Lenovo System Update (LSU) works for your particular device. Or check the details here: 

  • Step 3: If LSU is compatible with your laptop, download the installer you want. At the moment, Lenovo only provides these two options, so choose either of them:

  • Step 4: Run the installer
  • Step 5: Once the process completes, search Lenovo and click System Update.
  • Step 6: Proceed to click on the Get new updates tab on the left and the process will start immediately.

If System Update comes across packages, it will run them automatically and your drivers will be updated. System Update downloads data for your drivers and software directly from Lenovo servers. 

Use Lenovo Vantage

  • Step 1: Type Store in the search bar and click on Microsoft Store.
  • Step 2: In the Microsoft Store search box, type Lenovo Vantage.

  • Step 3: Click Get to download the app.
  • Step 4: Search Lenovo Vantage and open it.
  • Step 5: Select the Systems Update tab:
    • If you’re running full screen, you will see Systems Update under the Device option at the top.
    • If not, you’ll need to toggle the menu button to select System Update.
    • Also, you can use the Update button in Your Quick Settings.
  • Step 6: Click Check for Updates to search for currently available updates.
  • Step 7: Select Install All Updates to begin the installation process.

  • Step 8: Reboot your device for the updated changes to take effect.

Use Lenovo Service Bridge (Online Troubleshooting)

  • Step 1: Open the specific Lenovo PC Support page for your ThinkPad here and select Easy.
  • Step 2: Choose Step 1 – Automatic Driver Update.

  • Step 3: Click Start Scan to start Lenovo Service Bridge.
  • Step 4: Accept the Terms and Conditions and click Continue.
  • Step 5: When Lenovo Service Bridge launches, select Always allow to open links of this type in the associate app and skip to Step 10. If not, go to step 7.
  • Step 6: Click Download Lenovo Service Bridge, accept Terms and Conditions, then click Download.

  • Step 7: Launch the installer and don’t close it until the process completes, then jump back to the automatic scan via this link.
  • Step 8: Click Start Scan (same as Step 4).
  • Step 9: Once the updates are complete, close the window and reboot your PC.

Download ACPI Driver

  • Step 1: Open Lenovo’s official ACPI support page on your favorite browser.
  • Step 2: Click Download.

  • Step 3: Run the Installer
  • Step 4: Navigate to C:\drivers\Energy Management Driver.
  • Step 5: Run ACPI.exe.
  • Step 6: Reboot your machine.

Downgrade Windows (Extreme) 

  • Step 1: Press the Windows button, type Settings, and open it.
  • Step 2: Select the Systems Tab.
  • Step 3: Scroll down and choose Recovery.
  • Step 4: Under Recovery options, click Go back which is next to Previous version of Windows.
  • Step 5: Select Next on the window that appears.
  • Step 6: Finally, choose Go back to earlier builds.

People using Windows 11 have reported the ACPI driver error. Because the OS is still new, it won’t hurt to go back to Windows 10.

What Is The Meaning Of ACPI\LEN0078\5&2890D699&0?

The first part, ACPI, is short for Advance Configuration and Power Management Interface and is a key driver for Lenovo products. The driver controls the communication between the Lenovo hardware (BIOS) and software. And, the second part, LEN0078, is the technical device name for Lenovo ThinkPad X230.

Should I Update Lenovo Drivers From Time To Time?

Yes, because updating them is as important as installing Windows updates. Without the driver updates, you’re more likely to:

  • Suffer broken functionality
  • Shorten the life span of the hardware
  • Open a gateway for hackers to hijack your PC and steal your data.

That’s why many premium notebook vendors provide utilities to check for drivers and update them. Lenovo errs on the side of caution and gives you multiple tools to ensure that your system is up to date.

A Guide For Beginners

  • Always use the official platforms to update driver while avoiding third-party websites. For instance, don’t visit sites like,, and so on for drivers. Instead, go to or
  • As you troubleshoot issues online, remember to follow steps meant for your device only. Choose your device on the official support page or let Lenovo Service Bridge automatically detect your product’s serial number.


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