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LG netbook When i press the on button, The green light comes on and i hear the fan spinning but the netbook does not boot up and when i press the power button and hold it down, the light does not go off.

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  • 7 Answers

This could be trigered by Low voltage in the CMOS battery, normally the CMOS battery voltage is 3V and therefore if it is lower than that, lets say 2.8V, you should consider repalcing it but first have a look at it.
You should also ensure that the power supply is adequate.
Check the connectors for any pins that may be bent and make sure they have been straightened and be very cautious, they might break.
Jumpers may come off when the notebook is moved, so you should check if they are fitted properly.
Try all this and if not successful, then consider returning it to the store for check up.

Posted on Jul 15, 2013

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Posted on Jan 02, 2017

antiochpc
  • 1314 Answers

SOURCE: Compaq Presario 4400us

Either the new power supply you purchased is not functioning correctly. But, assuming it is now that you are getting some form of power to your PC, it is very likely the motherboard. Whatever fried your old power supply (or it could have just been the power supply itself) most likely fried your motherboard in the process. Probably not the CPU since the MB can't even post.

Posted on Jun 21, 2007

  • 1 Answer

SOURCE: power LED on but no boot up

Its the Mother Board..I had the same problem and had to have a new MB put in

Posted on Dec 04, 2007

  • 95 Answers

SOURCE: Toshibas are dieing on me.

How about if you boot with just the battery in? Does the battery charge? Possible solution include: remove and replace memory chips to make sure they are seated correctly. Check with a known good power supply. Almost sounds like a motherboard issue to me. Plenty of laptop problems are related to bad solder joints on the motherboard, unless you or someone you know can open it up and find a bad joint the only solution is mother board replacement. Try reseating the memory first.

Posted on Dec 08, 2007

  • 1 Answer

SOURCE: no power up

Here was the fix for me. The machine refuses to boot if the video card is not functioning. It should have one long beep however to tell you that there is a video problem. Someone hooked up our speaker incorrectly though! So we got no beeps. Once the speaker was hooked up and the video card was replaced, all is well!

Posted on Jan 02, 2008

  • 2427 Answers

SOURCE: power LED on but no boot up

it could be your power switch, veriy that it isnt the power supply by

1.) un-plug it from the main board
2.) look at the main board connector(one coming of the power supply)
3.) you should see green wire and next to it a black one
4.) using a paper clip bridge the too wires
5.) if it works proceed to net step if not get a new power supply

to check case switch and board switch

1.) plug in power supply to main board
2.) look at the pins where the power button connects to
3.) using a metal object (blade screw driver) bridge the pins

if the board should start up>
then its your power button on the case that is bad, you can try to repair it, chage it or buy a new case,

if it doesnt work.
1.) ensure that jcms(jumper to flash the bios) is set correctly
2.) unjack each drive one at a time to see if any is causing stalling
3.) get a new main board

Posted on Jan 02, 2008

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REWIRE THE ELECTRIC WIIRES.SHOULD THAT NOT HELP TRY WITH A OTHER PSU.

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I think your problem is your memory or video card.

Below are some steps that I recommend.

When you plug in the power cord is there any lights whatsoever on the computer?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the computer and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button.

Maybe you have a Static Charge Buildup. Remove the Power Cord, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in and hit the power button to see if it boots.

Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Open the Case and remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

Maybe your power supply is bad. Sometimes there is enough power to make the power light or some other lights come on but not enough power to make the fan turn on or hard drive spin.


Below are links and info I found from Dell's Website based on your model.


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/specs.htm

Controls and Lights Front of computer:

Power button - push button

Power light
green light - Blinking green in sleep state; solid green for power-on state.
amber light - Blinking amber indicates a problem with the power supply inside the computer. If the system cannot boot and there is a solid amber light, this indicates a problem with the system board (see "Power Problems" in your Owner's Manual).

Diagnostic lights
four lights on the front panel (see Diagnostic Lights.)

Standby power light
AUX_PWR_LED on the system board

Hard-drive activity light
green light - When the computer is reading data from or writing data to the hard drive.

LAN indicator light

green light - Solid green indicates that a LAN (local area network) connection is established.


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/adtshoot.htm#wp1056411

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Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove theBattery, then Press and Hold the power button for 30seconds. After 30 seconds plug the power cord back in (leave the batteryout) and hit the power button to see if it boots. If it does, you can putthe battery back in and let it charge.

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Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.

Maybe your power cord is bad if you don't get anything to happen whatsoeverwhen you press the power button. And if that's true maybe you wasoperating off the battery the last time you had it on and since the power cordis bad, it was not charging the battery so the battery is drained and the powercord is bad.

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