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Computer won't power on

Computer will not power on, the power button is lit up yellow but nothing will come on

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  • Mark Robinson May 11, 2010

    try taking the battery out and booting with mains only...what happens then ?


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If the light is glowing yellow that normally means a bad power supply. You can check this with a volt meter or you can replace the power supply unit if this is a desktop.

Posted on Dec 20, 2008

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No boot, powers up and all lights but touch pad lights up. before touch pad only lit up when computer started to boot. i press the on button and it starts up but no screen and shuts itself off in 10...

Hi there! What is happening here is the computer is not posting up. Does it show you the windows logo? I believe not? Usually for this kind of problem you can try this steps . First unplug all the external devices connected to your computer like printer,scanner then unplug the power cable/Ac adapter connected to your computer from the power outlet or strip if your using one and make sure that you will take out the battery as well.. Try to press and hold the power button for like 20seconds (you have to do that to remove any flea power inside the system we called this "power cycle").After that plug in the Ac adapter and start the computer normally by pressing the power button again. If the system power on normally that would be great but if not there might be problem with the hardware so you have to contact Toshiba it will be better if the system is still in warranty (Take note of the keyboard lit lights as well cause Toshiba technical support might ask that ). Hope this help you. God Bless...

Apr 20, 2011 | Toshiba Satellite (K000004080) Motherboard

1 Answer

The computer will not power on. The green light in the back of the computer behind the power supply is lit. When I press the power on button I can hear a "click" but nothing else happens. Dave

Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to boot

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your motherboard to your hard drive make sure they have a secure connection and are not faulty or just replace them there probably old and faulty

make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty or just replace them they are probably old and faulty ?
hope this helps

Dec 05, 2010 | Motherboards

2 Answers

My computer froze up one day. The green light on the mobo stays lit all the time now. I've replaced the cpu, RAM and tried different video cards, but it still won't boot up. I even got a different ASUS...


I think you have just about covered everything by testing the hardware out on a different system. The only vital thing that you haven't checked is the PSU (Power Supply Unit).

Get another power supply of the same type and try that in your system as faulty PSU's can cause these problems even though the motherboard is showing that power is being received, it could be showing a false positive.

Please let me know how you get on and if i can provide anymore assistance.


May 28, 2010 | ASUS K8V-MX Motherboard

1 Answer

My system won't start. I testd the power supply and it is good.There is a light on the mobo that is lit. But nothing runs. It happened when I hit the sleep button to put sys to sleep. It shut off instead...

You may now have a "frozen" system. Try this and see if it helps.

  1. Open your computer case. Make sure it is not plugged to avoid danger.
  2. Remove the RAMs from the motherboard.
  3. Power ON your computer. Your system should BEEP to indicate that is detected an error.
  4. Power OFF your CPU and return the RAMs in place. Your computer should be working now when you turn it ON.

Feb 13, 2010 | ASUS P5B-E Motherboard

1 Answer

Acer Aspire 5100 problem

You don't want to hear this I know, but your symptoms are very much like those of a computer in which the motherboard or processor has died. It is defnitely not the hard drive as you would still get a display and be allowed to go into Bios even if the hard drive was totally out of the computer. And missing memory would result in bios beeps indicating a faulty bios configuration, but all of that requires that the motherboard and processor be good. If they are not, you have the situation you are speaking about.

Aug 25, 2008 | Acer AOpen AX4BS-V (91.89J11.001)...

1 Answer

No power

check ur smps and power connector Mother board ok
next power switch for on/off ok check front panel byy

May 17, 2008 | Intel Motherboard

3 Answers

GA-8I848P is dead

did this happen all of a suddent? it was normal or you tried something in your board and it did not work later?

when you turn on the power does the power led lits? the system/cpu fan rotates?

Mar 31, 2008 | Gigabyte GA-8I848P-G Motherboard

1 Answer

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

Jan 02, 2008 | EliteGroup L7VMM2 Motherboard

2 Answers

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

Feb 17, 2007 | Gateway (4000811) Motherboard

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