Question about E-Machines eMachines Desktop PC

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The power light is on at half light, pushing the power switch has no effect. after removing the power cord and reinstalling it the power supply fan starts but stops. removal of the internal battery and reinstalling it had no effect. the computer is an Emachines T2682

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I alway regret taking my sister in laws broken E machine.
She had something similar that prevented it to turn on. I was alway wondering it that 3 stem chip at the center of the board was a power on electronic switch When you turn on the machine this little thing would electronically close to complete the circuit.
But I never tooke it and never experimented...

Posted on Jul 28, 2009

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Posted on Jan 02, 2017

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My converter does nothing,power light is on,but no picture,nosignals,nothing.what's wrong;


If, when you first turn on the power, you hear the hard drive spinning or possibly a beep, see any of the other lights briefly flash, or passably hear the fan start then the likely cause is the video.


  1. Check that the video cable is securely screwed into the computer
  2. Check the video cable going into the monitor too. Some manufactures have removable cables on their monitors.
  3. Be sure that the monitor has power, most monitor power switches have indicator lights either built-in the switch or near to the switch. Generally it's green
  4. Try your monitor on a friend's computer to make sure it works. Or you could try or your friends monitor on your computer too.

If it's not your monitor it could be your video card.

a) TURN OFF THE SWITCH AND REMOVE THE POWER CORD (either from the computer or the wall).

b) Open the case and reseat the card. That means that you will have to remove the video cable, remove the screw that holds the card in place. Pull up "gently but firmly"

c) Once the card comes out carefully reinstall the card into the same slot. Use your eyes to be sure it's lined up squarely and push it in. It should be clear to you when it's seated. It might take slight wiggle to get it in, this is normal.

d) Put the securing screw back in, close the case up and reconnect all cables and the power.

If on the other hand when you turn on the power switch you don't hear any or see any other lights. The first suspect would be the Power Supply. Replacing a power supply is easy enough on most machines, The problem is that getting the correct Power Supply can be tricky. There are a few types and some manufactures have made it so that only that manufacture

Dec 21, 2010 | Computers & Internet

1 Answer

I have a hp desktop about 5 years old..few days ago we had a power outage. power came on and off a few times ..i wasnt home but my pc was on when i came home my pc was off and wouldnt start..i try to push...


> bad power supply

Try an ordinary lamp in the wall-socket -- to make sure that a circuit-breaker inside your home has not "tripped", i.e., no power to anything that plugs in.

If there is an on/off switch beside where the power-cord connects to the power-supply, switch it to the "off" ("zero") position.

Unplug the AC cord from the power-supply.

While watching the fan inside the power-supply, and/or watching the fan on top of the CPU, plug-in the AC cord. One of the fans may "twitch", if there is power.

Flip that rocker-switch to the "on" ("one") position, and see if one of the fans "twitches".
Also, look on the motherboard for a small lamp -- it may go on if the AC power-cord is connected,
or may go on when that "back" switch is set to "on".

Try a different power-supply. If still nothing, then it's your motherboard that got "fried".

Nov 11, 2010 | HP Pavillion s7420n PC Desktop

1 Answer

PC will not power up. No fans, lights, anything.


Have you tried a different power cord? (longshot, I know, but it is one of the variables that you don't mention)

Have you tried a different A/C outlet?

Dec 22, 2009 | Computers & Internet

2 Answers

Front panel Ac Switch failing to start computer.


Try these steps.
If Power supply light does not turn on (or no power supply LED)
Perform the following steps, in order, until power is restored or it is determined that there is a hardware failure:
NOTE: If the Power Supply fan spins when the PC is turned on but the light does not come on, it is possible the LED is defective. If this is the case, use the section Power supply light comes on or flashes .
1. Disconnect everything from the PC, including the power cord.
2. With the power cord disconnected, press the power button on the front of the computer. Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
3. Replace the power cord with another power cord, like the one used by the monitor.
Test to see if the computer can turn on. If not, continue using these steps.
4. Ensure that the voltage selector switch is on the correct setting, 115V for North America.
5. With the power cord removed, flip the red voltage selector switch to the opposite position, wait about five seconds, and then switch the red voltage selector switch back to its original location.
This ensures that the voltage switch is engaged and set correctly for your country/region.
6. Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
7. Plug a lamp into the same outlet to see if the wall outlet has power. Try the computer in a different outlet in order to eliminate the outlet as a possible source of the issue. Test both to see if the wall outlets have power.
8. Remove all extension cords, power strips, surge protectors and any converters that remove ground. Plug the power cable directly to the wall outlet. Test for power. If this fixes the issue, find the device that is causing the issue and do not use it.
9. Use a vacuum cleaner to remove the build-up of dust from the power supply fan vent holes. Make sure that the PC is turned off and that the power cord is plugged into a grounded outlet. Only use the end of the vacuum hose near the outside of the fan entrance.
Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
10. If all of the above steps have been tried and the power supply light remains off, use the steps in the next section, use the next section Power supply light comes on or flashes , to reseat the cables and check the power switch connector.

Jan 11, 2009 | Compaq Presario SR1000T (568657) PC...

1 Answer

Broken pull cord for the 3 speed fan (Hunter kiw profile)


Turn off circuit breaker to fan. Remove bottom cover plate. Remove thumb nut holding switch in place. Examine switch. Places where wires push in should be numbered. Write down number and coresponding wire color. Remove wires from switch. Take switch with you. Walmart carries some switches but if you can't find it there go to a Locke supply store. Know how many speeds the fan iswhen you go looking. Reassamble in reverse order.

Dec 23, 2008 | Hunter Low Profile III 20807 Ceiling Fan

2 Answers

Hard drive fan stop working computer stop, yes I have power but but,computer will not tyrn on PC will not power up when I woke up this morning and went to use it the green light on the front was flashing...


Power supply light on or flashes Perform the following steps, in order, until power is restored or it is determined that there is a hardware failure: CAUTION: This product contains components that are easily damaged by ElectroStatic Discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (like a conductive foam pad), and wear an ESD wrist strap that is connected to a grounded surface, like the metal frame of a PC.
  1. Disconnect everything from the computer, including the power cord.
  2. With the power cord disconnected , press the power button on the front of the computer for five seconds. Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps. NOTE: If the power supply fan makes an inconsistent grinding sound or stops and starts erratically, replace the power supply
  3. With the power cord removed, flip the red voltage selector switch to the opposite position. Wait about five seconds, and then switch the red voltage selector switch back to its original location. Ensure that the voltage selector switch is on the correct setting, 115V for North America. Performing this step ensures that the voltage switch is engaged and set correctly for your country/region. Figure 4: Voltage selector switch c00517964.jpg Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
  4. Plug a lamp into the same outlet to see if the wall outlet has power. Try the computer in a different outlet in order to eliminate the outlet as a possible source of the issue. Test both to see if the wall outlets have power.
  5. Remove all extension cords, power strips, surge protectors and any converters that remove ground. Plug the power cable directly to the wall outlet. Test for power. If this fixes the issue, find the device that is causing the issue and do not use it. NOTE: If you find the device that was causing the problem was a surge protector, resetting a breaker or fuse on the surge protector may fix the issue.
  6. Remove all attached devices except for keyboard, mouse, and monitor.
  7. Remove any internal component that was recently added, such as video card, memory, CD, DVD, and hard drives. An added device may take more power than the power supply is rated for. If the problem goes away when the component is removed, the only option is to upgrade the power supply to power supply with a higher wattage rating.
  8. Check the power switch:
    1. With the power cord disconnected, press the power button on the front of the PC. The button should release easily and not stick in the socket.
      • If the button sticks, it should be replaced or serviced.
      • If the power button does not stick and appears to be functioning, continue using these steps.
    2. With the power cord disconnected, remove the case or side panel.
    3. Follow the wires from the power button on the front of the computer to their connection on the motherboard.
    4. Look at the power switch cables connected to the motherboard. If the cable has become disconnected, connect the power switch cable connector to the connector on the motherboard. Figure 5: Power switch connector on Motherboard c00517968.jpg
    5. Replace the side panel, plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.

Oct 24, 2008 | Compaq Presario 5000 PC Desktop

3 Answers

Printer does not turn on...it is plug in.


check again... push in the cord the connects to the printer itself. push in the end that connects to the wall outlet or the power strip/bar. make sure the wall outlet is not connected to a switch. if it is a switched outlet, make sure the switch is in ON position.


Jun 03, 2008 | Office Equipment & Supplies

1 Answer

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.

Jun 21, 2007 | Compaq (388746-001)...

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