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Started By
Message
computer wont boot question.
Posted on 6/28/14 at 5:40 pm
Posted on 6/28/14 at 5:40 pm
Asus G74. Two years old and of course ten days out of warranty.
Used it this morning. No problem. Closed top down and left.
Came back several hours later. Won't start. Completely dark. No lights anywhere, not even where the chord plugs in.
Battery light on chord is on. Chord looks undamaged and it's a sturdy one. Any suggestions?
Used it this morning. No problem. Closed top down and left.
Came back several hours later. Won't start. Completely dark. No lights anywhere, not even where the chord plugs in.
Battery light on chord is on. Chord looks undamaged and it's a sturdy one. Any suggestions?
2
Posted on 6/28/14 at 5:45 pm to prplhze2000
quote:
Chord
Music Board....
Did you shut down or just close the lid? You may try remove the power cord and the battery, then plug everything back in and try to boot.
Posted on 6/28/14 at 5:48 pm to ForeLSU
Close the lid. Did all that.
Posted on 6/28/14 at 5:51 pm to prplhze2000
Power cycle it:
Turn it off
Unplug everything
Take out battery
Hold power button down for 30s
Plug everything back in
Try and restart
Turn it off
Unplug everything
Take out battery
Hold power button down for 30s
Plug everything back in
Try and restart
This post was edited on 6/28/14 at 5:53 pm
Posted on 6/28/14 at 5:55 pm to bamabenny
Yup. Wonder what the problem was?
Posted on 6/28/14 at 5:56 pm to prplhze2000
Eh, who knows. That's always a good first step to try though.
Glad it's fixed.
Glad it's fixed.
Posted on 6/28/14 at 9:09 pm to bamabenny
Glad that helped. As far as what actually went wrong, it might take a lot of trial and error to figure out, or it may not ever happen again. 
FYI, this trick works when there's a problem at a level between OS issues and defective hardware -- when something goes wrong with the way the motherboard's bios is communicating with a piece of hardware, such as the keyboard, display, USB, GPU/CPU/RAM, or even power delivery (battery, power adapter). It can happen when there's a temporary short, as well. For example, my ASUS G73 has one faulty USB port that causes the laptop to power off the instant a USB device is plugged into it, and the power cycle trick is the only way to get it to turn back on. It's either an issue with a short circuit, some missing contacts in the USB port/motherboard connection, an issue with power delivery through that particular port, or one is a cause of the other, etc.. Haven't cared too much to look into it yet.
When something goes wrong at this level, especially with power delivery or components that straight-up randomly decide to stop responding, the bios still "remembers" the fault even if it's corrected and has trouble re-initializing the device with a normal reboot. What power cycling does is completely re-establishes the relationship/interface between the bios and all of the existing hardware. Removing the battery and power cord eliminates external power, and holding down the power button ensures that the capacitors (whatever residual, tiny amount of power remaining) are 100% discharged, so the next time the machine is powered on, it's a fresh and new "re-introduction" of components, allowing them to initialize properly.
FYI, this trick works when there's a problem at a level between OS issues and defective hardware -- when something goes wrong with the way the motherboard's bios is communicating with a piece of hardware, such as the keyboard, display, USB, GPU/CPU/RAM, or even power delivery (battery, power adapter). It can happen when there's a temporary short, as well. For example, my ASUS G73 has one faulty USB port that causes the laptop to power off the instant a USB device is plugged into it, and the power cycle trick is the only way to get it to turn back on. It's either an issue with a short circuit, some missing contacts in the USB port/motherboard connection, an issue with power delivery through that particular port, or one is a cause of the other, etc.. Haven't cared too much to look into it yet.
When something goes wrong at this level, especially with power delivery or components that straight-up randomly decide to stop responding, the bios still "remembers" the fault even if it's corrected and has trouble re-initializing the device with a normal reboot. What power cycling does is completely re-establishes the relationship/interface between the bios and all of the existing hardware. Removing the battery and power cord eliminates external power, and holding down the power button ensures that the capacitors (whatever residual, tiny amount of power remaining) are 100% discharged, so the next time the machine is powered on, it's a fresh and new "re-introduction" of components, allowing them to initialize properly.
Posted on 6/29/14 at 9:05 am to ILikeLSUToo
quote:
When something goes wrong at this level, especially with power delivery
I read about this technique several years ago. I did not believe it would actually work. Out of desperation, I tried it on my niece's laptop last year. It worked!
Had to do it again several months later. I finally had her replace the battery and she has had no problems since!
Thanks for the explanation as to why it works!
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