to do a PC HARD RESET
Every OEM PC maker in the business online has these simple instructions in there MANUAL, (LT and DT lap and desktops both)
RESETTING ANY PC:
This is mostly a motherboard reset or is done only to make the system safe (step 5 ) to remove parts (RAM/PSU/PCI/HDD/SSD) or get the PSU ready to bench test.)
This cures PC's stuck in sleep mode or with any chip (I.C) CMOS latchup or ESD / lightening event lockups, steps 1 to 5)
If sleep mode is stuck this is only temporary fix, because your PC had bad DEVICES DRIVER SOFTWARE. (or corrupted, or you upgraded the OS without OEM premission (means they have no W10 drivers !)
If the RTC coin cell battery is dead, replace it now, below 2.9vdc is bad. (if this tiny battery goes dead (or weak) the PC will go nuts, the BIOS goes nuts and nothing good can happen. (a hopeless place to be for a $1 part)
If a Laptop of any kind, portable PC of any kind the main battery must be removed or unpugged first. ! (and only put back later and only if you know it is good or tested good, as shorted batteries make PC's go dead)
If the PC still fails remove the RTC Coin cell, and repeat step 1 to 5, then put it back and reverse your steps.
If the coin cell was bad and replaced with new, as a last step in BIOS, go in to the main page of BIOS (no 2 PC use same keys) but in Dell we push F2 at power see BIOS page 1, and do a set BIOS defaults now) and exit.
Last and on topic I wear a ESD wrist ground stap to work on all PC internals. (the link shows the huge damaging levels of ESD possible)
version 1. 12-9-2017 (revised 7-1-2019)