Question about Toshiba Satellite M45-S169 Notebook

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Power cycling Everytime I press the power switch to turn on the notebook the power switch light comes on and you can here the hardrive spin up. It will then power down and then restart the entire process over again. It will do this 4 or 5 times and then shut off. The battery power is good and the laptop works fine once it finally powers up.

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Re: Power cycling

This may be caused by a weak boot sector image or damaged sectors/cylinders in the boot sector area.. OR by a faulty controller. Get a good disk checking utility and scan the drive there a few times. It may be beneficial to "Refresh" the "Boot Sector Image". But if it is so, it will eventually fail. But if it were me, and I depend on my laptop, I would get a replacement drive and transfer my all my Old hard drive contents to the new with something like "Ghost" or "Drive to Drive" but there are a number of other good ones you may choose. I have found over the years the old adage "A grain of prevention is worth mountain of cure" and if this prognosis is correct the drive will only get worse and worse and eventually fail.. generally when you need ya lappy the most...

Posted on Sep 03, 2007

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Re: Power cycling

Hi, If the power on/boot up sequence does not even reach the Windows logo before recycling, it is not a software/virus issue. If at certain times the laptop would continue powering up and booting into Windows but more often recycle the powering up process then I am inclined to think that it is a hardware problem. Hardware possibilities: 1. Might be loose connection or corroded terminals/connectors; 2. Cold solder of surface mounted components in the mainboard; 3. a USB device is interacting - try booting without any USB devices attached; 4. try running the Toshiba without the battery and just the AC adapter; Your possible options: a. Try performing #s 3 and/or 4 and note if there is a significant change in the booting process; b. 1 & 2 would require opening the laptop and do a circuit diagnosis, you might be better off seeking the services of a qualified professional. Hope this be of some help/idea. Post back how things turn up or should you need further information. Good luck and kind regards.

Posted on Sep 03, 2007

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What stops computer from starting up


turn off the notebook. take a regualr desktop monitor VGA or LCD monitor and plug into the notebook (make sure to power up both the notebook with AC adapter and power cord for monitor). Turn both on and you should see video on the desktop monitor . if you do not see anything, i would hint at the fact that the notebook screen may be bad. Do you hear the hard disk drive spinning when you turn on the notebook ? if so, thats a good indication that the mainboard is still working and that the LCD screen on the notebook is not functioing . You will have to replace the LCD (notebook) screen

Jan 04, 2012 | Acer Aspire 5630 Notebook

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Pressing power button results in power light and hard disk light coming on for a couple of seconds cpu fan spins for same length of time then fan stops lights go off few seconds later lights come back fan...

it seems that you have damage memory card replacing may fix a problem but its better for it that you bring it to a technician in order to check much better because the motehrboard may possible be the problem.

Jun 30, 2011 | Acer Aspire 4315 Notebook

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Gateway mx6448 Notebook will not power on, Red LED flashes 4 times when power on button is pressed then nothing happens. It is the same with only the battery. LED will not flash if I have only the power...

There can be many things associated with no power to the computer.
  • The outlet into which the computer is plugged may be inoperative.

  • The surge protector you are using may be inoperative.

  • The power cable may be loose or damaged.

  • An internal device may be damaged.

  • The power supply may be inoperative.

Basic Troubleshooting Power to the Computer
There may not be a consistent flow of power to the computer.
  1. Verify that the outlet into which you are plugging the computer is operational.

  2. If you have the computer plugged into a surge protector, plug it directly into the outlet.

  3. Verify that the power cable is plugged securely into the back of the computer.

  4. If you have a monitor with a removable power cord, swap the power cords between the monitor and the computer.

Note: If you recently added a new hardware device prior to experiencing the no power issue, turn off the computer and remove the newly added hardware. If there is still no power, reseat all the other cards and cables in the computer to verify that all other devices are seated securely.
Resolving Power Supply Issues
  • External Device Conflicts
  • There may be an external device causing the computer not to turn on properly.

    1. Before continuing, verify your computer is turned off.

    2. After you have established that adequate electricity is going to your computer, verify that the voltage switch on the back of the power supply is set correctly. The small red switch is to be set to the 115-volt setting.

    3. Remove all external devices except the monitor and turn on the computer. If the fan on the back of the computer now spins, turn off the computer. Plug in the external devices one at a time and turn on the computer after each device is added.

    4. Note: If you removed all external components and the fan on the back of the computer does not spin, the problem is with something inside the computer.

  • Internal Device Conflicts
  • This helps determine if the issue is a damaged or badly seated component.

    1. Verify that the computer is turned off.

    2. Remove the case from the computer.

    3. Remove all the red, yellow, and black power connectors from each floppy disk drive, CD-ROM drive, and tape backup unit that is in the computer. The only devices connected to the power supply are your hard disk drive and motherboard.

    4. Turn on the computer and verify that the fan on the back of the computer spins. If it does not spin, turn off the computer.

    5. Remove the power connection from the hard disk drive and reconnect power to one floppy disk drive. Turn on the computer and verify that the fan on the back of the computer spins.

    6. Reseat the power connection from the power supply to the motherboard. Turn on the computer and verify that the fan on the back of the computer spins. If the power has been restored, turn off the computer and reconnect the power connections to the devices. Test the computer for power after reconnecting each device.

  • Power Switch
  • The power switch may not be functioning properly.

    1. You may need to open the case and readjust the power switch.

    2. Locate the control panel inside the computer and remove any screws holding it in place.

    3. Turn on the computer with the control panel removed by pressing the button on the control panel that corresponds to the power button. If the power supply fan spins and/or the computer turns on, put the control panel back in its place. Try to turn on the computer again.

  • Test Switch and Diagnostic LED
  • Note: Not all power supplies have a test switch and diagnostic LED.
    Certain power supplies have a test switch and LED to help better troubleshoot the device. The green LED is always on when the computer is powered on. If the computer is not receiving power please perform the diagnostic test below.

    1. Verify that the computer is turned off.
    2. Remove the case from the computer.
    3. Remove all of the red, yellow, and black power connectors from each floppy disk drive and ROM drive and the tape backup unit (TBU) that is in the computer. Remove all power connectors from the motherboard. The only device that needs to be connected to the power supply is the hard disk drive.
    4. Press and hold the test switch for five seconds on the power supply, and then verify that the green light on the power supply comes on.
    5. If the light comes on:
      1. The power supply is good and something that was plugged into the power supply is causing the computer to not turn on.
      2. Plug devices in one at a time, testing with the test switch between each device to determine what is causing the power issue.
      3. If all devices are plugged in and the light is working, the connections may have needed to be reseated, or it is possibly a power switch issue.
      4. Go to the power switch section of the power supply checklist for additional troubleshooting steps.

    6. If the light does not come on:
      1. Disconnect the power from the hard disk drive, and then plug in power to the CD-ROM drive and determine whether the light comes on.
      2. If it does, follow the preceding information - "If the light comes on."
      3. If the light still does not come on, contact Gateway Technical Support.

    7. Confirm that power from the power supply is connected to the motherboard. Remove all cards and cables from the motherboard, and press and hold the test switch for five seconds on the power supply and determine whether the green light-emitting diode (LED) comes on.
    8. If the LED comes on, put the devices back in one at a time, testing between each device to determine what is causing the issue.


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1 Answer

Can not turn the laptop on

Hi. Turn the computer on and press F8 when you see the toshiba screen. Select safemode then press enter. open the System Config Utility (msconfig) by pressing Start, Run (XP), or type the word msconfig then press enter for Vista.

Disable all start up items and restart your machine... See if it starts and boots to windows.


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1 Answer

It will not turn on at all

Unplug the power. Remove the battery. Hold in the power button for 20-30 seconds. Plug the power cord into a known good electrical outlet (not controlled by a switch), connect it to the laptop and try to power it on. If it doesn't power on, are there any lights? Do you hear the fan try to spin? The lights may assist you - check the manual online. Sounds like it may need a new motherboard, should power cycling it not work.
Hope this is helpful - if so, please leave a rating!

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My laptop is not turning on

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Hi i have a toshiba a135-s2386 laptop, when i press the power switch the main power light comes on and fan spins but the pc does not post at all

Try doing this: Turn off the computer. Disconnect your charger. Take out the battery. Then without the charger and the battery, press and hold the power button for around 10-15 seconds to drain all the excess power inside it. Reconnect your charger then turn it on. If it turns on, then good. You may put the battery back afterwards. If it did not turn on then it could either be software or hardware failure already.

Dec 14, 2009 | Toshiba Satellite A135-S2386 Notebook

1 Answer

Hi, My Dell Inspiron is not switcing on. when pressed the power on switch. power on light come on for a while and goes off. can i get support for the fix

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Oct 26, 2009 | Dell Inspiron 6400 Notebook

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Turning on

take out the battery
remove the power lead
press and hold the power button about 20 seconds
replace power lead only
try and turn on
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