Having problems with your PC Desktops ?

Bad power supply, installed new one, get green light on mother board; but doesn't boot up. Bad start up button?

\015 Emachine T3958 died. Installed new power supply, green light on motherboard; but it doesn't boot up. Could this be the start button?\015

Answers :

Yes, it is my belief that it is the Power On button. To test this, there is a simple solution. I however, would like to caution you at this point.
You will have the power supply plugged in. There will be a small spark. I wouldn't advise how to test the Power On switch, if I thought your safety would be compromised in any way. I just wanted to forewarn you of what you're dealing with.

You have a 20-pin or 24-pin motherboard power cable. It is the longest power connector in your computer, and plugs into the motherboard. (Not trying to insult your intelligence. I just simplify my answers, so there is no mistaking what information I put out)

This connector remains plugged into the motherboard. Where the wires go into this connector, is the backside of the connector. If you look closely at this connector, you will see those wires go down into individual socket holes. All the way down in each socket hole, is a metal terminal. The metal terminal is attached to the wire. It is a female terminal, and goes over a metal pin on the motherboard.

What I wish you to do, is to make a jumper wire, and stick the ends of this wire, down into two socket holes.
This jumper wire should be made of a thick wire, with insulation on it. It should be about three inches long. Strip about 3/4ths of an inch of insulation, from each end of the wire. Give each end a little twist, so that there are no strands of wire sticking out. Just a nice solid end. Bend this jumper wire into a U-shape.

You are going to stick one end of this jumper wire, down into a socket hole, and hold it there. You will then take the other end of the wire, and stick it into another socket hole, but just briefly. Just a momentary contact of about two seconds, or less. This is where there will be a little spark. Just enough, that if I didn't warn you about it ahead of time, you might freak out.

You will see a Green insulated wire going down into the 20 or 24 pin connector. You will see a Black wire next to it.
The Green wire is one socket hole that the jumper wire Must go down into. You can pick ANY Black wire. ALL the Black wires are Ground wires. That's why you can use any one of them.
The Green wire is the Soft Power On wire.

The link below will show you an average 20-pin ATX main power cable. I just referred to it as the 20-pin motherboard power cable, above, for ease of reference. Hoping you may recognize it by that description, better.
http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20
The photo all the way to the right, on this page, shows you the Green wire I'm speaking of. You can see the Black wires also.

You may wish to wear rubber dishwashing gloves, on your hands as you do this. It isn't all that bad, but I just thought this might make you feel safer. There are some people that do this procedure with a paper clip, and tape wrapped around the middle. I don't advise this.

If you take this jumper wire, and stick it way down in the sockets, so that you're sure it's touching the metal terminal down in there, and the power supply doesn't turn on, then you have problems with the power supply. Check the surge protector the power supply cord is plugged into.
Just because you see a power on light that is lit up, on the surge protector, Don't assume it's okay. You need to check THE receptacle the computer is plugged into. I use a table lamp for this.

I have had, where everything else was getting power from a surge protector, and not the computer. Turned out to be One bad receptacle in that surge protector.

Also, since your computer uses an Intel Celeron D 340 processor, make sure the 4-pin ATX power cable from the power supply, is plugged into the motherboard. It will have a female socket on the motherboard, and have -> CPU, next to it. (Square design plug. 2x 2 sockets in it. Has two Yellow wires, and two Black wires. The Yellow wires are 12 volt wires)
This is power for the processor. The computer will not boot up, unless this power cable is plugged in.
Repair Help & Product Troubleshooting for PC Desktops

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Bad power supply, installed new one, get green light on mother board; but doesn't boot up. Bad start up button?


Yes, it is my belief that it is the Power On button. To test this, there is a simple solution. I however, would like to caution you at this point.You will have the power supply plugged in. There will be a small spark. I wouldn't advise how to t ... PC Desktops

Emachines problem... PSU works but comp doesnt turn on


Hi,\015\012I don't want to tell you a color because it could be different than the actual. Look at the front of the computer and trace the wire that goes to the switch and follow it to the mother board. If you have a volt meter you could measure the ... E-Machines eMachines Desktop PC

Dell Precision 380 won't boot


I had a similar situation with a work computer; the power supply always tested good. A wiser and more experienced computer guru ordered a new power supply. He gave it to me told me to install it, I did and was laughing the whole time. Well it in fact ... Dell Precision 380 P4 Dual Core 3 GHz (99382) PC Desktop

Pover up trouble


Sounds like something is drawing down on your 12 volt supply drives or on board regulators. Try it without the drives connectged, and see if you can get the system to boot up(you'll just get a notice that your drives are unavailable, but you'll alre ... Dell Dimension 5100 (D51L1) PC Desktop

Pc starts and runs but wont boot up monitor shows no signal


1) When you turn on the computer, watch and listen for: a) power supply fan, (power is on) b) chassis lights (power is on) c) ticking sound during memory test (the BIOS POST is running) d ... HP PC Desktops

Emachine t3958 Hi, I turned off my t3958 by pushing the power button and now it want come back on. I ohm the switch, not sure what it should be but it 0 out. I pulled out the mother board and inspected it, nothing looks or smells burnt. With the mother board out I plugged the power supply in to a outlet and one fan started running but only for a second then stopped. I then waited a few minutes plugged it back in and it did the same thing and if I unplug and then plug right back in again it does


First check to see if a drive died. Unplug all the drive Floppy, hard and dvd or burns. I have come across many time that a drive will die and keep motherboard from booting. Being that you say you get a green light on the motherboard shows that the ... E-Machines eMachines Desktop PC

My dell d505 latitude laptop has the dreaded


Sounds like your battery is dead. They go bad in laptops and need to be replaced in a couple years. \015\012\015\0121) Unplug your battery and power laptop on with just AC adaptor. If laptop runs normal then you need to replace battery. ... Dell Latitude D505 Notebook

Dell Dimension 8300 wouldn't start


Sounds like a power supply. You are getting the standby voltage and not the switched. plug all your wires in except the big 20 or 24 pin motherboard connector, take a small wire and short the green (PSU_ON) to black (ground) wires. This will simul ... Dell Dimension 8300 PC Desktop

Compaq proliant 5500 server P2 dual xeon processors. Will not power on. green lights on both powers supplies are on - green lights on Mother board and LCD on front are on but absolutely nothing happens when pushing power button


I am wondering if you had been doing some work to this when this problem started. Did you take the wires off for the power switch? I have noticed that sometimes if you pull the wires off of the motherboard and put them back on and you put the connect ... Compaq ProLiant 3000/5500 Redundant (306558B21) Fan Assembly

Not Starting up


In my experiences its (the blue screen o' deth)related to one of several things, A, bios, the battery is running low and cant maintain functionality.B, a stick of ram is bad(it just happens sometimes)C,weak or over taxed power supp ... PC Desktops

EMachine T3958 Won't start - Please help


The green LED indicates that the standby voltage is present which is what provides the power so the front button can tell the unit to turn on fully.\015\012At that point, there are 3 possibilities; the power supply has a fault and won't turn on ... E-Machines eMachines Desktop PC

Dell Dimension 5100, Doesn't Boot Up, Display Lights Up "!, 2 3"


2 green lights usually indicate a memory problem, however, when you get 3 lights, RAM is good, but the BIOS is unable to hand off to the operating system.To test this, disconnect your hard drive (both ribbon and power) and connect the mon ... Dell Dimension 5100 (D51L1) PC Desktop

Dell computer my dell pc ,question what does it mean when the light is green inside is on but the power button is flashing.when it is hooked up it want work. thought it was burned up memory board not working now the lights are all strange..help


You might still be ok open case up and blow dust out then see if fan on cpu is running see if anything comes on when you power the pc updo you heer any beeps if not good then disconect any new hardware you recently connected to it does your pc boot u ... Dell Dimension PIII Tower Computer XPST500 PC Desktop

Dimension 2400 Flashing Power Light


TO TEST TO SEE IF THE POWER SUPPLY IS FULLY FUNCTIONAL IS TO USE A VOLT METER ON THE 20 PIN CONNECTOR THAT ATTACHED TO THE MOTHER BOARD. SET YOUR METER TO DC VOLTS IN THE RANGE OF +5 TO +20 AND TOUCH THE PINS FROM 1 TO 20 INDIVIDUALLY. tHERE ARE THRE ... Dell Dimension 2400 PC Desktop

IBM ThinkCentre A51 PC Desktop won't boot motherboard power supply is good fan comes on. hard drive is spinning no video no audio or beeps


This could still possibly be a bad power supply, even if the fans and drives spin up. If you have a spare try hooking it up.the list of things that can cause this are:bad power supplybad ramIDE error (optical or h ... IBM ThinkCentre A51 PC Desktop

Desktop won't boot


That's not good. There is probably some kind of damage to the Mother Board.Open your case up (try not to touch anything inside) and look for distended capacitors.A capacitor is going to be a cylinder on the Mother Board itself ... PC Desktops

No picture or power green light just blinks - Sceptre X9G Komodo II (Black) 19 in. Flat Panel LCD Monitor


Carrizosas, Tell me more. How old? Approx. total "ON" hours of use? Did it display a "bright, crisp, full color text and graphics and pictures the day before? Does this unit have a lay on floor "BLACK BRICK" ac to dc supply, or only a 3 wire line cor ... Sceptre X9G Komodo II (Black) 19 in. Flat Panel LCD Monitor

Compaq proliant 5500 server wont power up


In my experience when a server/computer does absolutely nothing when the power button is pressed it is a dead processor. That may not be the case in your situation. It could be as simple as a defective power switch. Is the switch a soft touch or does ... Compaq ProLiant 3000/5500 Redundant (306558B21) Fan Assembly

Asus p5b-mx motherboard no display no beep


When ever you are getting the beep messages after you remove the ram card and connecting the tower to the power cord it shows that mother board is functiong normally so no problem with the mother board .try this steps so that it may resolve the issue ... E-Machines eMachines Desktop PC

Won't power up


This error can be caused by one or more of the below possibilities.\015\012Floppy or CD that is not bootable is cur... BIOS or CMOS setup is not setup properly... Hard disk drive does not have bootable f... The hard disk drive ... IBM ThinkPad T20 Notebook

My d530 minitower powers off unexpectedly and red lights starts to blink on System's LED//


Hi Kindly let me know how many times the red light blinks \015\012\015\012\015\012\015\012Condition\015\012\015\012Code\015\012\015\012Service Actions\015\012\015\012\015\012\015\012\015\012\015\012Process ... HP Compaq d530 Convertible Minitower PC Desktop

HP Compaq nc6120 Fails to Boot


Here's a link to troubleshoot the startup of your notebook, from the HP online support site, and ... HP Compaq nc6120 Notebook

Monitor stays on for a few seconds then goes out


This problem is very often caused by dry electrolytic capacitors on the inverter board. If you have some skill with soldering you could try to change them. When buying new ones ask for LOW-ESR capacitors for switching mode power supplies (SMPS) and 1 ... Acer AL1711 17" Flat Panel LCD Monitor

Dell e510 won't make it to post


Unplug computer, disconnect all usb/monitor/internet, open it, hold power button until green led on the inside on the motherboard turns off, pop out the BIOS battery (looks like a big watch battery and use a small flathead screwdriver to depress the ... Dell Dimension E510 Dual Core 2.8 Ghz (847403171179) PC Desktop

Gateway 702GE desktop When i push the front botton to start it up,the fans start to turn and then stops with no operation. The small green led on the motherboard stays lit and green and the front start button stays lit and blue, but there is no start up. Can anybody help please? Matt


Try removing all the cards from the expansion slots and remove the ram sticks. disconnect the drive cables from the board but dont touch the cpu or power connectors. Now hit the button. If nothing changes, probable board fault. If it now boots up and ... Gateway 702GE PC Desktop
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.electronic-servicing.com || Terms of Use || Contact || Privacy Policy
Load time: 0.9886 seconds