Please remember to vote and to mark the replies as answers if they help. and the second type is Phantom devices that are not connected to the computer. The first type is typical non-plug and play drivers, printers, etc. If the hardware passes then reinstall the applicable driver from the Lenovo website. Solution 1: Show hidden devices in Devices Manager In Device Manager, there are two types of hidden devices. Open device manager > click view > click show hidden devices > manually expand all rows > look for any row displaying a yellow triangle with black exclamation mark or unknown device > post images or share links into this thread They may have different versions and different test performance. There should be both a BIOS and bootable version.
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