to do a PC HARD POWER RESET
Is your PC dead?
BIOS screens dead too? Monitor shows NO SIGNAL or the like?
This page is a full cure, or only a band aid, if any PC locks up in sleep (or hibernate) mode and drivers are bad it will repeat lockup.
If the lockup was from ESD or Lightening surges this is solid cure. (until ESD hits again)
I will do this page in 2 parts, one is for PC is dead (how to do simple hard power reset, and how to do service on a PC, and not blow parts to H3LL.
The PC called a Laptop remove the big battery and test with no big battery there on AC power Pack only. (if a battery shorts the PC will be dead)
If the PC is Deaktop there is no huge battery there, but all PCs have RTC coin cell battery that if dead , BIOS screens can go dead, and the PC.
If the RTC coin cell battery is dead, replace it below 2.9vdc. (it costs only $1 to replace it, and only lasts for 5 to 7 years) On any desktop this is childs play on Laptops , from easy to pure hell is possible on laptops.(RTM?)
This is just the steps for for a hard reset, not doing service on the PC, covered last.
This is not hard at all, and resets all ESD and latchup events, even stuck in sleep mode events. (the latter is bad software drivers in the PC's OS)
If a laptop that huge battery in the PC must come out first, some are easy , just drop off bottom and some thin notebooks pure hell to reach. (on a real desktop this is just 4 steps, and is really childs play simple)
If this fails make step 3 , 1 full hour long. (even over night in very extreme cases)
Servicing any PC and not wanting to blow up expensive modules inside any PC.? (work safe don't blow up $300 components, ok?)
Rule #1 on all PC's is never remove or swap parts inside hot, that means with the AC line cord to the wall AC jack, at anytime, if you do this wrong that is called illegal HOT SWAPs or hot plugged.!
Do step 1 to 3 above then... (on a laptop of any kind the big battery was remove long ago above)
The hard reset cures these causes of failure. (some are only temporary , and stated last in the list.)
Parting shot, I have seen some folks try to change the BIOS from Legacy mode to UEFI mode (or the reverse) and now wonders why BIOS is dead and the HDD dead too, this is by clear intent and design.
UEFI mode, marries the HDD to the OS and BIOS and the dang Video card, if you change things that attempt to unmarry the HDD, the BIOS (UEFI) will go dead.
This prevents moving any UEFI HDD to a second PC, and stealing your data. (by DESIGN)
Dead PCs have many more causes more than just the above one cause (latchup) lots more there are. AS SEEN HERE.
This page above is no panacea, it is only one very common reason for any PC to latchup and go dead. (one of say 20 reasons, possible)
If you don't like UEFI why are you using it?, the cure is simple its legacy mode, go to Microsoft.com forum and ask how to go from UEFI boots to Legacy Boots, (answer reInstall the OS fresh)
version 3. 12-9-2017 (revised 1 -1-2020) I split the page so folks don't get confused. (latch up and service mode)