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nikos78
Paper Tape
Posts: 3
Registered: ‎08-04-2014
Location: Romania
Views: 4,553
Message 1 of 4

B590 - Unknown device in Device Manager

Hello

 

I just bought a B590, model 20208, with, i3-3110m, 500GB HDD, GeForce 720M.

I installed Win 7 64bits, but in Device Manager, before installing all the drivers appeared Other Devices an Unknown Device with thise details: code 28, Device type: Other devices; Location: on Microsoft ACPI-Compliant Embedded Controllert . After installing drivers, the problem persists

Another problem was with PCI express but resolved with Intel Management Engine Interface drivers.

Other problem resolved was with the GeForce 720 M videocard; wasn't recognized but resolved with the last driver from GeForce site.

So... the last problem remained it's The Unknown Devices.

Could anyone help with this one?

Untitled.jpg

Thank you

Nicolae

Retired Support Specialist
Posts: 4,447
Registered: ‎04-22-2013
Location: Philippines
Views: 4,521
Message 2 of 4

Re: B590 - Unknown device in Device Manager

hi nikos78,

 

Can you check if this is the driver for it.

http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/gtku09ww.exe

 

Check if the Hardware ID of this device is a ACPI\VPC2004

   on that same windows that you posted click the Details tab and change the value to Hardware ids

       Now check the detail that will show below, if that shows ACPI\VPC20004 then that is a Lenovo Energy Management Controller.

 

Regards

Solid Cruver

 

 

 



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nikos78
Paper Tape
Posts: 3
Registered: ‎08-04-2014
Location: Romania
Views: 4,503
Message 3 of 4

Re: B590 - Unknown device in Device Manager

Hello

 

Thank you for your answer. I checked the Id and it's ACPI\LEN0068.

What does it mean?

 

Untitled.jpg

nikos78
Paper Tape
Posts: 3
Registered: ‎08-04-2014
Location: Romania
Views: 4,481
Message 4 of 4

Re: B590 - Unknown device in Device Manager

Hello again

I tried with Lenovo Energy Management Controller driver and it worked.

Thanks a lot for helping me!

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