I am not sure if they are the same, but something puzzling just happened. My dell precision workstation 2007 has been fine ever since, with many, many power outages over the years. But there is a time a guy pulled the power cable off, and a few days later the PC no longer boot, with loud whooss fan sound at startup. After testing, everything was fine, only the motherboard died, with apparent fried capacitors.
Can anyone please explain? Thank you.
42 Answers
Cutting off power to PC can not damage the hardware. Only OS can be messed up, and unsaved data can be lost. The motherboard died for some other reason, and it would happen even if power cable was not unplugged.
2@Zoran Jankov what if the power supply is very old like this one since 2007?
I have a theory. Even assuming the power supply is new and everything is functioning as expected from an international standard point of view, it might be still different if one unplugs the power cable from the PSU directly instead of from the wall outlet; there would be no different between unplugging the cable from the wall outlet and electricity outage because the current flowing/voltage is the same, unlike unplugging directly from the PSU where the current/voltage is halted immediately. And since the PSU is very old, its surge protection might not hold- result in short circuit? Possible?
#Daniel B exactly if you think in terms of micro nano level
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