I'd check the latest firmware, chipset and driver support packs have been installed.
https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-x-series-laptops/thinkpad-x1-carbon-type-20a7-20a8/downloads/automatic-driver-update
lastly since brand new it could be a hardware failure problem in which case I'd contact the vendor for support.
https://support.lenovo.com/us/en/
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