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Computer wont start

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by niktone

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im trying to fix this computer it wont start. i tested the power supply with a tester and it works and i even put it in another computer just to be safe. i disconnected everything except the main power to the mother board. and the computer still wont start. there's a green light on the motherboard and somebody told me that if the lights on its not the motherboard i dont know if its true but any suggestions would be helpful

thanks in advance
Nick C

9 replies

by oh smeg

If it does generally a 4 Pin Plug this needs to be plugged in before the unit will work.

Also try removing the RAM and refitting it to the same socket it was taken from and the Video Card if there is one. Sometimes you can get a bad connection which causes the unit not to work.

Are you hearing any Beeps from this unit as well. If not that sounds like the M'Board or CPU had died and gone to [b]Silicon Heaven[/b] though to double check make sure that there is a speaker on the Front Panel Connection and remove all of the RAM then power on. You should be rewarded by a series of Beeps which is a Error Message telling you that there is no RAM Fitted to this M'Board. If that fails to happen I would replace both the M'Board and CPU here.

If however when you power on you hear one Beep this is telling you that the Unit has Passed the Power On Self Test so if you are not getting any further than that look at the Video Card where it plugs in you may be required to clean the connections with a soft Rubber/eraser and then refit.

Col

by niktone

it does have the fourr pin connector i plugged that in to i forgot to mention. i also tryed refitting the ram in the same port i havent tried it in the second one though there are no beeps the power led doesent even come on when i press the power button. im not sure if there is a specker though i think there is. ill check as soon as i get a chance. the graphic card is intergrated. also by the main power connector (20 pin) there is a green light thats on does this mean anything? thanks

by oh smeg

Look for a Speaker or temporally fit one if there isn't one fitted and see what you get.

Try clearing the BIOS there should be a 3 Pin Header strip here that you can use to clear the BIOS with and it just involves changing the jumper from Pins 1 & 2 to Pins 2 & 3 for a couple of minutes with the Power Disconnected. If that doesn't do anything remove all of the RAM if you still do not hear anything replace the M'Board.

Col

by oh smeg

Remove the speaker and plug it to the correct connections on the Front Panel Connector.

If you don't have a speaker you can buy one from most Electronics Supply Companies that may be left in this case. Note if you get one of the Pesio Electric Speakers you can leave them connected as most come with a 1 inch long wires and the 4 Pin Plug. Just plug one of these onto the 4 Pin Connector on the Front Panel Connector Header Strip and leave it there.

These are not loud and do not work for anything but the M'Board Generated Beeps.

Col

by niktone

Thanks for the information. i tested everything else and i tried starting the computer with nothing but the power and it doesn't start. what could it be the chip set?

by fettu1293

you could post your specs on here to help us diagnose the problem. Motherboard, RAM, CPU...

green light on MoBo means it's getting power. You could still have a burnt North Bridge Chipset or another MoBo component.

by oh smeg

Either the M'Board or CPU here.

From Past experience I have yet to see a dead Intel CPU. I'm sure that they fail but I haven't seen one yet.

If you have a AMD CPU here the M'Board as well as the CPU will have gone to [b]Silicon Heaven.[/b] Not sure why this happens but in every case where something has failed with any AMD Systems it's always been both the CPU & M'Board. It's like one part fails and destroys the other for some reason.

Col

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