Thanks for fixing the formatting
First, try another kernel, try linux419:
sudo mhwd-kernel -i linux419
Reboot, hold shift to get to the grub screen, select from there.
Second - boot off the install media, just to test the hardware works (it probably will).
Third - Post the output of:
cat /var/log/pacman.log | grep "2020-05-XX" | grep -i upgrade
Where "XX" is the day of the update.