Lenovo ACPI Driver for Windows 11 Latest Version
Missing or Unknown Device ACPIVEN_INTDEV_33A0?
Here's How to Fix It
If you've recently upgraded to Windows 11 and are experiencing issues with an unknown device called ACPIVEN_INTDEV_33A0 in Device Manager, don't panic. This is a common problem that can be easily resolved by installing the latest ACPI driver from Lenovo.
To do this, follow these steps:
1. Visit the Lenovo support website for your ThinkCentre M90a Gen 2. 2. Select the "Drivers & Software" tab. 3. Enter your model number in the search bar. 4. Select the latest ACPI driver for Windows 11. 5. Click the "Download" button. 6. Once the download is complete, run the file and follow the on-screen instructions to install the driver. 7. Restart your computer.After restarting your computer, the unknown device should be recognized and the issue should be resolved.
If you are still having problems, you can try the following additional troubleshooting steps:
1. Uninstall the ACPI driver and then reinstall it. 2. Update your BIOS to the latest version. 3. Reset your computer to factory settings.If none of these steps resolves the issue, you may need to contact Lenovo support for further assistance.
Note: This issue is not limited to Lenovo devices. Other manufacturers, such as HP, Dell, and ASUS, have also reported similar problems with the ACPIVEN_INTDEV_33A0 device. The solution is the same for all affected devices: install the latest ACPI driver from the manufacturer's website.
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