This problem occurs when Microsoft Windows does not properly detect the display chipset or other types of device drivers which remain then with the classic yellow exclamation mark in the Device Manager window of the control panel of the operating system .
Driver motherboard or chipset not installed or obsolete
Into You need to download and install the latest drivers for the chipset and video card. If you have the CD that contains the motherboard chipset drivers. Otherwise, you can find drivers for all sulsito the manufacturer, or more conveniently, as usual with the program Driver Detective.
Into If you have tried both steps and the Windows Device Manager still contains an unknown PCI device or with yellow exclamation mark, it is likely that the device can not be identified correctly. It might not even be compatible with the version of Windows installed because they are too recent.
If you are trying to install a new hardware device, and is not recognized, we suggest you download the latest drivers for that device.
If you have just finished reinstalling Windows on your desktop PC or laptop and is getting the message unknown device, it is suggested to manually identify the PCI device through the registry that you can visualzizare through the Regedit command written in the command line of the Windows Start menu.
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