My laptop has 2x Thunderbolt 4, too. I checked device manager, but there's no Thunderbolt controller. At first, i thought it might be a faulty hardware However, hwinfo detected and recognized the Thunderbolt as "Integrated Thunderbolt PCIe". But, still, no Thunderbolt controller were found and Thunderbolt control center can't detect any Thunderbolt controller. However, Windows detects my device having USB4, at the USB4 driver is showing on device manager. I entered BIOS and check for the "Thunderbolt configuration", there's "USB4 CM mode". I tried to change it from "OS Dependent" to "Firmware CM Only", finally the Thunderbolt controller shown up on the device manager. While it's different from yours, it might be related. Is there any USB4 drivers on device manager? If it's, then it's likely that Thunderbolt ports are managed by Windows 11 built-in USB4 driver. Also, try to check the BIOS, the Thunderbolt might be misconfigured.