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Can't seem to locate power button on mother board

Missing system cover unit so i can't turn pc on

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Just got an acer Z3751 that the screen suddenly shuts downs but the power button is still is on , and am un able to restart or resume my work by pressing any buttons.. i went to the power options and i...


This model has mother board problems. In addition to sudden auto switch off, it also has problems in starting the system. what Acer workshop can do for you is to change a new mother board. After changing mother board, the problem comes back after some time. So my advice is change a new PC. of course not Acer again.

Mar 01, 2012 | Acer Aspire Z3751 All In One PC Desktop

1 Answer

How to unlock bios of toshiba portege m500


two options

1. look on the mother board for a small round battery about the size of a nickle, remove it, start pc, after start up shut down, replace battery, start up again... or remove battery, let sit for about 30min, replace battery start pc.

2. look for a small red or yellow toggle switch or button on the mother board, (should say "reset bios") push button, restart pc.


i assume this is a lap top so there will be some disassembly of the unit, not to extreme though, usualy the battery and the switch/button are next to one another and located toward the front of the mother board, and if in lap tops the battery or batteries are in a plastic covering wired to the mother board with a small connector, just unplug connector if you cant find the reset button.

hope that helps

Mar 23, 2011 | Toshiba Computers & Internet

1 Answer

Bought new power supply, no difference power button will not even go on or light up ; however small green light on mother board lights up. als accidentaly disconnected the switches wiring to the mother...


The green light just show that the motherboard is getting power.
The power button of the front of the case is connected to the mother board, not to the power supply, usually in the extreme lower left corner along with the with the HDD and Reset Button cords; Power button wire are labeled and usually red/black.
If all wired correctly, possible bad or stuck power button or reset button.
Hope this helps.
Please rate this answer by check rating "Hands"

Feb 08, 2011 | E-Machines T3958 (827103050974) PC Desktop

1 Answer

My mother's garage door opener doesn't make any noise when the button is pressed. The light will come on and stay on for its predetermined time, then go out. Press the button again, the light comes on...


There are some possibilities here. If you have had electrical storms or a power surge it could have damaged the logic board. You would need to pull the board and check for burnt or missing traces on the printed circuit.

Or it could be that the door is stuck open. If that is the case the trolley is most likely jammed against the bolt just in front of the motor unit. You will need to loosen the chain enough to release the tension and then run the opener until the door closes. While the door is closed you need to locate the 'up limit' adjustment on the side of the motor unit. Turn this control 2 full turns in the opposite direction of the arrow printed on the cover. Tighten the chain.

If it isn't either of these possibilities post back with more clues and I'll try some more.

Jan 13, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

No power,power supply seems ok,green light on mother board on. when pluged in the fan runs for a couple seconds and turns off.power button has no effect.


sounds like a mother board issue,

start with pulling out all ram chips and re try,,

then try pulling all cards out like old modem and also cdroms.

if ever thing but power is unpluged its a bad mother board or CPU chip

Mar 12, 2010 | E-Machines T3958 (827103050974) PC Desktop

2 Answers

Emachines T3958 will not turn on


Check the fuse on the inside of it and see if it is not blown, if not blown change it any way it may not look like it is blown but it is hard to tell, and see if that work.

Jul 10, 2009 | E-Machines eMachines Refurbished EMA...

1 Answer

Computer compaq nc 6000 power off during working


Hi,

If you feel the power adapter working fine with the diff unit its not an issue with the adapter,

Now, if the unit is not powering on.just perform this:

Take out the batter, adapter and make the unit stand alone and press and hold the Power button with out any power to the unit(Without battery , adapter) by doing that we can take the static charge which might be causing the issue,

If that does not fix the issue, try reseating the RM if you are comfortable, here is the steps:

Primary memory board removal Before you begin: Remove the battery and keyboard.
  1. Push both arms outward simultaneously to release the primary memory board to the spring tension position.

    Caution! When handling a memory board, use care to prevent touching the memory chips on the board. Touching the memory chips could damage or destroy the memory.
  2. Grasp the primary memory board by the edges and pull gently to remove it.
  3. Place the primary memory board in a static dissipative bag.
Primary memory board replacement
  1. Remove the primary memory board from the static dissipative bag.
  2. Locate the alignment slot and align it to the empty board receptacle.
  3. Grasp the primary memory board by the edges and push gently to replace it.

    Caution! When handling a memory board, use care to prevent touching the memory chips on the board. Touching the memory chips could damage or destroy the memory.
  4. Press the primary memory board down to latch the arms.
Steps to remove Keyboard:

eyboard removal Before you begin: Remove the battery.
  1. Loosen the captive P1 Phillips-head screw that secures the memory/Mini PCI cover to the bottom of the notebook.
  2. Use your finger or a flat-bladed tool to lift the outside edge of the memory/Mini PCI cover and remove it.
  3. Remove the two T8-9 mm screws that secure the keyboard to the base enclosure.
  4. Turn the notebook right side up and open the display panel fully.
  5. Slide the four plastic locking tabs toward the bottom edge of the keyboard to unlock the keyboard from the LED switch cover.
  6. Use a flat-bladed tool or your finger to lift the top edge of the keyboard and then place it upside down on the top cover.
  7. Using minimal force, lift the locking bar to unlock the keyboard ZIF connector on the system board.

    Important! Use care to prevent damaging the ZIF connector and ribbon cable.
  8. Remove the keyboard ribbon cable from the ZIF connector and remove the keyboard.
Keyboard replacement
  1. After ensuring that the locking bar on the keyboard ZIF connector is unlocked, place the keyboard right side up on the top cover.
  2. Insert the keyboard ribbon cable into the keyboard ZIF connector on the system board.

    Important! Use care to prevent damaging the keyboard ribbon cable.
  3. Push the locking bar down to lock the keyboard ZIF connector on the system board.
  4. Toe the tabs on the bottom edge of the keyboard into the top cover.
  5. Press the keyboard flat and slide the four plastic locking tabs toward the rear of the notebook to lock the keyboard to the LED switch cover.
  6. Close the display panel and turn the notebook upside down.
  7. Replace the two T8-9 mm screws that secure the keyboard to the base enclosure.
  8. Toe the memory/Mini PCI cover into the enclosure.
  9. Tighten the captive P1 Phillips-head screw.


Jul 06, 2009 | HP Compaq nc6000 Notebook

2 Answers

The purple light is flashing in the front and tries to start and won't turn on. disconnected power cord and held button in for thirty seconds still have same issue what could it be?


This can be a faulty power supply or a damaged mother board. here's how you can confirm.

When pressing the power button, inspect the cooling fan that is located on the back of the power unit where the power cord plugs in. if the fan starts then stops immediately, this will confirm a damaged power supply.

Now, if the fan continues to operate but, the CPU doesn't start to power up and load the OS, thsi will confirm a mother board issue. replace the mother board in this case.

Jun 21, 2009 | E-Machines T6216 (827103077834) PC Desktop

1 Answer

The power led and reset was both on


We have to open the system unit where the motherboard is located, but first pull off the power of your computer so that there will be no ground.

Removed the cover, before touching any part inside the system unit (motherboard) touch first the casing or chas-is of the system unit to removed the static in our body.

Let us first remove the reset wire usually the color is red and black it has a name reset at the connection pin at the mother board usually found at the bottom of the mother board, or follow the reset botton wire found infront of your system unit.

After you have removed, try to plug the power of your computer and turn it on. We can open our computer if the reset connection is off.

That will be the first step to know the cause of the problem. Try also to clean the motherboard using vacuum cleaner the portable only or clean paint brush, cause some of those problem due to dust.

Oct 18, 2008 | ASUS P5P800S Motherboard

1 Answer

Dell Dimension 4600C will not power up


Sounds like the power supply is faulting. If not it is your mother board that has failed.

Mar 06, 2008 | Dell Dimension™ 4600C PC Desktop

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