I had a similar issue after performing the 3.03 bios update on my 7840U from Windows 11 pro.
After the bios update finished, the computer looked like it was going to restart and the screen went black but the power button LED stayed lit. After a few minutes I hit the power button and it powered down. I powered it up with my TB3 docking cable in the left rear port and a USB-A hub in the left front port, and a USB-A wireless mouse dongle in the right front port and none were recognized in windows, despite plugging and unplugging a few times. I determined that a USB-C 65w power supply wasn’t recognized in left rear either, but it was in the right rear (so the only port working was right rear). I shut the laptop down, removed all of the ports and replaced them, and then booted up without any USB devices plugged in.
And then, upon re-plugging my USB-A devices they worked. On first plug in the left rear, my Dell TB16 docking cable was providing power to the laptop, but none of the two external displays were recognized. After unplugging and powering off the TB16 and holding down the power button on the dock for about 20-30 seconds, and then connecting to power again and then plugging in the cable to the left rear port, it recognized my displays, but the docking station isn’t providing power to the laptop, so I had to plug a power supply into the right rear port. I may have to start a separate thread about that.