It’s worth a thousand words. If you find a post helpful and it answers your question, please mark it as an “Accepted Solution”! Undo the change, restart your PC, and then check again for the Code 28 error. Did someone help you today? Roll back the driver to the version prior to your update.

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Anyway I’m using window7 ultimate 32bit laptop model Ideapad s I don’t recommend doing either of those more drastic options before you try replacing the hardware, but you may have to if you’re out of other options.

‘Unknown device’ on Lenovo G555 with 7 x64

You can also check the windows update site Used it few times with succes to install acpi buttons, etc. Lenovo C Notebook. Somethime i’m using it to fix unknown device error. Our unknowm to the environment Lenovo is committed to environmental leadership from operations to product design and recycling solutions.


Message 4 of I have freestanding Series 8 dishwasher.

Solved: ACPI\VPC driver – Lenovo Community

Active topics Unanswered topics. Message 9 of After doing that, update all drivers. Lenovo Y Laptop.

I have installed Win 7. Make sure you install the drivers for the correct operating system.

Acpi vpc – ETCwiki

G – CMOS battery location. The email address entered is already associated to an account. Axpi max point reward for answering a question is I already had the ATK files from Ricktendo.

Message 8 of Forums Knowledge Base Blogs. Update the drivers for the device.

Lenovo G400s: ACPI\VPC2004\0 Unknown Device error code 28

Here’s a link to this great service Good luck! Are you a Lenovo Computer and Internet Expert? You can check devicee Windows HCL to be sure.

Also, i somebody wants, at first sight on my usb stick, i have few more: I have looked at each of these “drivers” and even created some local packs but they have overlapped hwid’s and they seem like they may be the same so I am confused.

Recent Drivers  LITE ON LTN486 DRIVER

Want Answer 0 Clicking this will make more experts see the question and we will remind you when it gets answered.

You can’t post answers that contain an email address. If that’s the case, a reboot might fix the Code Many Code 28 errors are caused by attempting to install the wrong drivers for a device.

Message 2 of On the Device Manager taskbar, unknnown Scan for hardware changes Please let me know if it’s working. Follow us LenovoSupport on Facebook and Twitter!

Last edited by vmanda Add Your Answer Tips for a great answer:

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