Where can I find the drivers to an unknown device in the device manager, here is the message I get Unknown Device on Microsoft ACPI-Compliant System The drivers for this device are not installed. (Code 28) There is no driver selected for the device information set or element.
Microsoft ACPI-Compliant Embedded Controller last. Microsoft ACPI-Compliant Embedded Controller Driver for Windows 7 Enterprise (Microsoft Windows NT 6.1.
To find a driver for this device, click Update Driver. After a while my computer freezes, and then it doesn't boot up without being in safe mode. I already tried everything, I was originally on windows 8.1, I downgraded to windows 8, and now I am windows 7. Another thing is the display adapter will display a yellow triangle after the computer crashes, and then I try to re install my video drivers or downgrade, and even after I do so, the computer still freezes. Actually the computer is not fully compatible with Windows 7 and that is why you are receiving the ACPI error. If you look on the Dell website you will see that dell has not provided support for either Windows 7 nor Windows 8. Dell only supports Windows XP and Windows Vista.
The ACPI error is caused by the AMD Away feature that Dell implemented for Windows XP and Windows 7 does not support that feature. I have the exact same system and I have not been able to find a complete solution to the ACPI error. One website,, notes there is no AMD Away driver for any Windows systems. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. What is the exact make, model, and series of the system/motherboard? Broadcom Wireless Adapter Driver Windows 10. There are some motherboards with hardware components that are not compatible with Windows 7 because of the lack of device drivers for them.