Your host's Embedded Controller (EC) is taking too long to respond or has locked up. The EC is the system component responsible for many power management and built-in hardware functions. On a laptop, this could include aspects of the system such as battery charge/discharge/conditioning, thermal and power monitoring, fan speeds, screen/keyboard backlighting, power/sleep buttons, etc.
Check with the hardware vendor for any firmware updates applicable to the system. It is possible that an update might improve the EC's responsiveness and allow ESXi to shut down the host without triggering a PSOD. (Perhaps not likely, but possible.)
The Embedded Controller on a laptop (or an all-in-one PC) has many more responsibilities than on a regular desktop or server system, so your laptop's EC might simply be busy handling some part of the shutdown process. As others have noted elsewhere in this thread, ESXi is not designed for laptops and such systems are not certified as compatible with ESXi.
You can of course work around the problem by letting ESXi shut down to the PSOD screen and then hold the power button down for a few seconds to forcibly power off the laptop. There is no risk in doing so; The system has already been halted and the last thing ESXi is trying to do is to actually turn off the system power when the PSOD happens.
Thanks,
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Darius