I recently purchased a used MSI motherboard and processor, and now that everything is assembled and powered on, I'm encountering a frustrating message that says, 'Warning!!! Please insert USB key and press any key to check.' I've already flashed the BIOS to the latest version, but I'm still stuck. I've tried various troubleshooting steps with AI guidance: testing different USB ports for my USB drive, inserting the necessary .ROM file for flashing, performing Clear CMOS multiple times, removing the battery for 10 minutes, and disconnecting my SSD. However, nothing seems to work. When I press a key, the text just flickers but doesn't lead to any change. I've seen recommendations to contact MSI support, which I have done and I'm currently awaiting a response. In the meantime, I would really appreciate any insights from others who might have faced this issue. Thanks! By the way, my motherboard model is MSI MAG Tomahawk DDR4 Wifi.
2 Answers
Have you tried reaching out to the person you bought the motherboard from? They might have insight into the setup or even the USB key needed for the U-Key. Even if they claim they didn’t have issues, it's worth a shot to ask if they remember anything about it!
It sounds like you're dealing with MSI's U-Key security feature. This typically requires a specific USB key to boot, and if the previous owner had it enabled, you might need that password and key to bypass it. Unfortunately, no amount of BIOS resetting will change this since it’s designed to keep unauthorized users out. So, contacting MSI is really your best bet since they'll have the tools to help you with this issue.

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