1. Please use the esxcli software command to update the ESXi host patch
“esxcli software vib” commands to patch an ESXi 5.x/6.x host (2008939) | VMware KB
2.Could you be more specific interms of what you want to monitor on the hardware perspective and specify the make and model as well as hardware monitor differs from hardware to hardware.
3. It is a PSOD (purple screen of death) and possibly due to the bnx2x driver.. I am unsure of the ESXi host version from the screenshot.
You can check the correct and updated drivers/firmware from VMware compatibility guide and update them
Thanks,
MS