Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Anonymous asked in Computers & InternetHardwareOther - Hardware · 1 decade ago

Power cycling electronics?

I know it fixes most problem I have with electronics but why does it work?

Thanks for your help

2 Answers

  • 1 decade ago
    Favorite Answer

    The main reasons why power cycling is done is to have an electronic device reinitialize its configuration or recover from an unresponsive state, such as "Crash" or "Hanging".

    Most modern electronic devices have a program ROM chip or BIOS, with their proprietary programming. Over the course of normal operation, certain unforeseen events such as power surge and electrical noise can cause electronic devices to malfunction, and the simplest way to reinitialize the program is to cycle the device's power.

    I hope my answer explains your question.

  • 1 decade ago

    Because it restores power on defaults.

    Sometimes a clock cycle is missed or there is just a bug in the firmware. Sometimes the device is waiting for something to happen (like it sent a request and is waiting on a return from another device) and missed the communication or it was never sent. That causes the built in software to corrupt or freeze. By power cycling you are removing all power so all the charge holding components release their charge and the system is completely off. Then when you plug power back in, it goes back to where the reset vector points to and starts setting up the system again using good known defaults.

Still have questions? Get your answers by asking now.