I installed the following driver for my machine. It will fix the Unknown device problem. Proposed as answer by AudriusG Wednesday, April 13, 1: So please be aware that whilst you might fix the problem of the unknown device, your device might become unstable in other ways due to the presence of this driver and you might have to uninstall it after all! Windows 7 Hardware Compatibility https: Hope this helps someone.

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Tuesday, August 25, I’ve already tried installing that Driver. I installed the driver and my mysterious “unknown device” problem disappeared.

Wednesday, October 27, Proposed as answer by rfritzemeier Saturday, December 5, 3: I sure hope you read this because you helped me immensely. Thursday, January 16, 3: Asrock Z87 Killer motherboard, mine was intel lpc cohtroller 8c44, but I followed the same process and went to the very bottom of intel at the very end its like Intel – Z87 LPC 8c44 and sure enough, the unknown device is gone, woohoo!


Hi, There are many options for this driver available here: Select the path to the directory that was created during the install.

Chipset – Intel – Intel(R) ICH8M LPC Interface Controller – 2815 Drivers Download

If anyone knows of any similar free software that will automatically download and install drivers please let me know. Then again this is for a system that is somewhat old so i guess you could say they dont bother updating older systems.

James James- You certainly helped me Sunday, December 6, 2: I have the same problem. James, You nailed it! After three hours of hair-pulling, your comments saved my day. Monday, November 16, 6: Ah ok, so it’s not just a Windows 7 problem then? nitel

Tuesday, February 24, 8: Note the R on Intel. Sunday, May 8, 9: I used to use a program called radarsync that would automatically search and inetrface missing or outdated drivers but they recently started charging for their service.

Wednesday, December 5, Windows 7 IT Pro. I fixed it by download 79za05ww.

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You can install 79za05ww. You only need to point the driver update to the drivers path but if you want to drill all the way down that works too.


Tuesday, February 24, 6: Once you have the path go ahead and click okay and after a second or two you will have the driver updated and the error clears. When I installed the RC1, the drivers were installed automatically.

Intel(R) ICH8M LPC Interface Controller

Proposed as answer by AudriusG Wednesday, April 13, 1: Please don’t tell me to do a bazillion other methods because none work.

Tuesday, February 24, 3: So I had to try and find out what hardware it was, and then find the driver. It will fix the Unknown device problem.

Monday, January 9, 4: