Tip & How-To about Computers & Internet

How to repair Computer Fan

1. Remove the mini-tower computer cord and unplug the power. Disconnect the cable from the back of the computer for a note in which they were set to be fast to restore.


2. Unplug the connector on the back of the computer. Tighten the screws on the back of the computer, back up the side with a screwdriver. Slide the computer case and put it out of your way.


3. Locate the fan in the box near the back and then connect the power cord where it is on the motherboard. Unplug the fan motherboard manual. Remove the four screws holding the fan on the bottom of the box with a screwdriver to secure.


4. Remove the PC case fan and set aside. Turn the fan of the new mini-tower in the back of the cabinet with screws and plugs wire connector on the motherboard.


5. Place the rear plate side of the computer and secure it with screws. Connect the power cord to power on the back of the case and connect the cable to the computer case.


6. Connect the power cable from the mini-tower outlet and turn on the computer.

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Bios password Dell XPS M170 how do you unlock it ???


How to use the jumper to reset the BIOS password on your Dell desktop computer

Summary: If you're prompted for the Basic Input/Output System (BIOS) password at startup (before the operating system loads) or the BIOS or CMOS setup is locked, and you don't know or have forgotten the password, you won't be able to use your computer or change BIOS settings. Use these instructions to reset the BIOS password manually using the jumper.
NOTE: This process will not clear a Windows Operating System password, nor will it clear passwords on a Dell portable computer. This is only to clear System BIOS passwords on Dell Desktop and Mini-Tower systems.

Desktop system BIOS password reset.

NOTE: The BIOS is the program that activates the hardware required to start your computer. The jumper is a small plastic covering found inside your computer.

Before you begin

Perform the safety steps in the order below.
WARNING: These steps are for your personal safety and the protection of the equipment.
  1. Turn off the computer and unplug the power cable.
  2. Wait 5 seconds.
  3. Disconnect all external devices.
  4. Disconnect any telephone or network cables from your computer.
  5. Press and hold thePowerbutton for 10 seconds while your computer is unplugged to release static electricity from the system.
  6. Before touching anything inside your computer, ground yourself with a wrist-grounding strap or by touching an unpainted metal surface, such as the metal at the back of your computer. While you work, periodically touch an unpainted metal surface to dissipate static electricity.

To use the jumper to reset the BIOS password

NOTE: On the DellManualsweb page, download the Setup Guide or Service Manual for your computer. Then refer to the System Board Components section for a labeled illustration of the jumpers on the system board.
  1. Ensure that your work surface is flat and clean to prevent scratching your computer's cover.
  2. With your computer still turned off and unplugged, remove your computer's cover.
  3. To locate the password jumper on the motherboard, look for the letters PWD, PSWD or PSWDCLR.
  4. Choose an option:
If there are 2 metals pins under the jumper
  1. Remove the jumper from the pins, replace the computer cover, reconnect the power cable and monitor and turn on the computer.
  2. After the Windows logon screen appears, turn off the computer.
  3. Again, disconnect the power cable and monitor. Press and hold the power button for 10 seconds to release static electricity from the system.
  4. Remove your computer cover.
  5. Replace the jumper in its original position covering the 2 pins. This will re-enable password feature.
  6. Replace the computer cover.
  7. Reconnect the power cable and other connections and turn on the computer.
If there are 3 pins under the jumper (See figure 1. below.)

Figure 1. Generic motherboard illustration showing a 3 pin password jumper, you motherboard may vary, see the owners manual for you system for specific instructions.
  1. Remembering which two pins are covered, remove the jumper from those pins.
  2. Reinstall the jumper in a different position. For example, if you removed the jumper from pins 2 and 3, reinstall the jumper over pins 1 and 2.
  3. Replace the computer cover and reconnect the power cable and monitor.
  4. Turn on the computer and wait 5 seconds. Then press and hold thePowerbutton until the computer turns off again.
  5. Disconnect the power cable and monitor again. Press and hold thePowerbutton for 10 seconds to release static electricity from the system.
  6. Replace the jumper over the original 2 pins.
  7. Replace the computer cover.
  8. Reconnect the power cable and other connections and turn on the computer.

May 06, 2017 | Dell Computers & Internet

1 Answer

i reset my surge protector and the computer wont power up. i think i need a new power supply. the power cord is working fine. Please let me know where i can find a power supply for the aspire l100....thanks!


The Acer Aspire L100 is a desktop computer powered by a special DC adapter and power cable. The computer's motherboard incorporates a fuse designed to prevent any power surges from damaging the computer. If the fuse burns out due to a power surge or for any other reason, the computer will no longer function. You can check the motherboard fuse for damage yourself, then take it to a trained technician for replacement if needed

Shut down the Acer Aspire L100 and turn the tower around.

Press the "On/Off" button on the front of the tower. If the computer will not boot and the fan does not turn on, the fuse may be burned out.

Unplug the power cord from the rear of the tower

Turn the tower on its side and remove the Phillips-head screws connecting the back panel to the Aspire L100's cabinet.

Pull out the motherboard assembly gently from the back of the cabinet. The internal fuse is located on the motherboard behind the DC power jack, which is to the right of the monitor jack

Let me know if this helped..



  • 2 Press the "On/Off" button on the front of the tower. If the computer will not boot and the fan does not turn on, the fuse may be burned out.
  • 3 Unplug the power cord from the rear of the tower.
  • 4 Turn the tower on its side and remove the Phillips-head screws connecting the back panel to the Aspire L100's cabinet.
  • 5 Pull out the motherboard assembly gently from the back of the cabinet. The internal fuse is located on the motherboard behind the DC power jack, which is to the right of the monitor jack.

  • Read more: Fuse Location on Acer Aspire L100 ' eHow.co.uk http://www.ehow.co.uk/how_7815704_fuse-location-acer-aspire-l100.html#ixzz1XUVwmxuA

  • 3 Unplug the power cord from the rear of the tower.
  • 4 Turn the tower on its side and remove the Phillips-head screws connecting the back panel to the Aspire L100's cabinet.
  • 5 Pull out the motherboard assembly gently from the back of the cabinet. The internal fuse is located on the motherboard behind the DC power jack, which is to the right of the monitor jack.

  • Read more: Fuse Location on Acer Aspire L100 ' eHow.co.uk http://www.ehow.co.uk/how_7815704_fuse-location-acer-aspire-l100.html#ixzz1XUVwmxuA

    Sep 09, 2011 | Acer Aspire L100 PC Desktop

    1 Answer

    My tower will not power "on" I shut-down the


    Remove the power cord.
    Locate the 120V / 240 V ac selector switch. (within 4 inch from the power inlet)
    Move it back and forth few time.
    Make use it's set to the correct voltage selection.
    Reconnect power cord and power up.
    ===== This AC selector switch can get shifted and set to different position.

    Jul 28, 2011 | Acer Aspireā„¢ T180 PC Desktop

    1 Answer

    it is stuck in power saver mode tried every thing can not get in come back up. Tried turning off and on, unpluged and pluged back in, put in cd, tried starting in safe mode with F8 key.


    Possible that it's caused by a faulty hardware

    1. Remove all the connection at the back of your computer
    2. Power cycle your computer tower by pressing the power button for 15 seconds
    3. Plug the power cord back in and monitor cable at the back of your computer tower (if it turned on, meaning that one of the device plugged at the back of your computer is the one's causing the problem, for you to pin point the problem, try plugging it one-by-one and turn on the computer each time you plug a device)
    4. If it keeps on doing that, open up your computer tower (be careful to unplug the power cord and power cycle it to avoid static electricity)
    5. Reseat the video card, turn on the computer again, if it's still occurring
    6. Reseat the IDE/Sata cable of your hard drive and try to make sure it's properly plugged in, turn on the computer again, if it's still occurring
    7. Reseat the memory, turn on the computer and test it again if the same thing
    8. If you have 2 memory chip inserted in your computer tower memory slot, remove the other one and turn on the computer, do the same thing to other memory and each slot
    9. Reseat the CPU and start the computer.

    Jan 09, 2010 | Acer Aspire AM5641-U5520A PC Desktop

    1 Answer

    set a power on password and cannot remember it for compaq c300


    we need to remove the battery (cmos) for a bit to clear the passwords, heres how:
    Before you begin any removal or installation procedures:
    1. Shut down the computer. If you are unsure whether the
    computer is off or in hibernation, turn the computer on,
    and then shut it down through the operating system.
    2. Disconnect all external devices connected to the computer.
    3. Disconnect the power cord.
    4. Loosen the Phillips PM2.5×5.0 captive screw that
    secures the memory/Mini Card module compartment cover
    to the computer. (bottom of laptop)will see memory chips or slot when the cover is opened.
    5. Lift the right side of the cover and swing it up and to the
    left and remove it.
    6. Make note of which antenna cable is attached to which
    antenna clip on the Mini Card module, and then disconnect
    the auxiliary and main antenna cables from the Mini
    Card module.
    7. Remove the two Phillips PM2.0×4.0 screws that secure the
    Mini Card module to the computer.
    8. Remove the Mini Card module by pulling the module away
    from the socket at an angle .
    Reverse the above procedure to install a Mini Card module
    9. Remove the RTC battery from the socket on the
    system board.
    10. Wait approximately 5 minutes.
    11. Replace the RTC battery and reassemble the computer.
    12. Connect AC power to the computer. Do not reinsert any
    batteries at this time.
    13. Turn on the computer.
    All passwords and CMOS settings have been cleared.
    I leave the new password field blank unless you have worries about someone changing your settings in the BIOS.


    Oct 07, 2008 | Computers & Internet

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