Toshiba Satellite L745-S4210 Support Question
Toshiba Satellite L745-S4210 Support Question
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Question posted by rpafelipo on June 22nd, 2014
Toshiba L745 Light Blinks 5 Times And Will Not Power Up
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Current Answers
Answer #1: Posted by freginold on July 16th, 2014 6:16 PM
freginold
Member since:
December 20th, 2011 Points: 23,253,885
Member since:
December 20th, 2011 Points: 23,253,885
Often when a laptop won't power on, it's because of one of four things: the battery, the battery charger/AC adapter, the power board/battery charging board (if the laptop has one), or the motherboard.
You can attempt to rule out the battery by attaching the AC adapter and trying to turn the laptop on. If the laptop turns on when on AC power but won't turn on with the battery, then one of two things is happening: either the battery is bad, or the charger is bad and the battery has run down. If the laptop won't turn on with or without the AC adapter plugged in, then the battery is not the problem. If your AC adapter has an LED on it, you can often tell if the adapter isn't working because the LED won't light up. (However, just because the LED does come on doesn't mean the adapter is working as it should.)
If it doesn't seem to be either the charger/adapter or the battery, then you're probably looking at either the power board or motherboard. If you are comfortable taking the laptop apart, you might want to try replacing the power board, which is the board that the charger plugs into. Amazon.com sells power boards (also sometimes called power jack boards) for many laptops for between $15 and $30.
The motherboard is a more expensive option to replace, so a good rule of thumb is to try the less expensive parts first. If it still won't power on, you may have a bad motherboard, in which case it might be cheaper to get a new laptop than have the motherboard repaired or replaced.
You can attempt to rule out the battery by attaching the AC adapter and trying to turn the laptop on. If the laptop turns on when on AC power but won't turn on with the battery, then one of two things is happening: either the battery is bad, or the charger is bad and the battery has run down. If the laptop won't turn on with or without the AC adapter plugged in, then the battery is not the problem. If your AC adapter has an LED on it, you can often tell if the adapter isn't working because the LED won't light up. (However, just because the LED does come on doesn't mean the adapter is working as it should.)
If it doesn't seem to be either the charger/adapter or the battery, then you're probably looking at either the power board or motherboard. If you are comfortable taking the laptop apart, you might want to try replacing the power board, which is the board that the charger plugs into. Amazon.com sells power boards (also sometimes called power jack boards) for many laptops for between $15 and $30.
The motherboard is a more expensive option to replace, so a good rule of thumb is to try the less expensive parts first. If it still won't power on, you may have a bad motherboard, in which case it might be cheaper to get a new laptop than have the motherboard repaired or replaced.
Related Toshiba Satellite L745-S4210 Manual Pages
User Guide - Page 48
.... Once the battery is charged for the first time, avoid leaving the computer plugged in the AC adaptor
NOTE
If the AC power light flashes amber during charging, either the main battery is malfunctioning, or it is using the battery to power the computer. Your computer's Power Options utility can damage the battery. See "Changing...
User Guide - Page 50
...light glows white.
(Sample Illustration) Turning on the computer for the first time, do not turn off the power again until the operating system has loaded completely. When you turn on the power The preinstalled operating system will load automatically. Setting up your software. Follow the on the computer for the first time... computer for the first time
Turning on the power
To turn on your ...
User Guide - Page 63
... original internal storage drive fails, you can be connected to an external power source via the AC adaptor.
❖ The Toshiba Recovery Wizard also provides the option of -box state. See "Creating ... the drive.
It is strongly recommended that you to specify a custom size for the first time. For more information.
❖ When you create recovery DVDs/media before using Windows® ...
User Guide - Page 64
... 7 32-bit or 64-bit operating system, select one at this time. To recover using the second method, see "Backing up your work ...During the recovery process it is turned off.
2 While powering on the drive and all information stored in those partitions. ... that your computer, press the F12 key when the initial TOSHIBA screen displays.
To recover the original factory image using the utilities...
User Guide - Page 67
... press the F12 key when the initial TOSHIBA screen displays. If not, skip to step 5.
5 A warning screen appears, stating that when the recovery is turned off.
2 While powering on your computer's internal storage drive:
...is executed, all data will be moved to this time. Getting Started
67
Recovering the Internal Storage Drive
You can access the folders under C:\backup%current date...
User Guide - Page 70
...offers a choice of Factory Default Software with user's data" option is turned off.
2 While powering on your computer's internal storage drive:
1 Make sure the computer is selected in the next step..., select one at this time. To recover using the second method, see "Restoring from recovery DVDs/media" on your computer, press the F12 key when the initial TOSHIBA screen displays. Click Yes to...
User Guide - Page 72
...
4 If your computer, press the F12 key when the initial TOSHIBA screen displays. 72
Getting Started
Recovering the Internal Storage Drive
9 Click... the recovery. When the recovery process is turned off.
2 While powering on page 76. To recover using the first method, follow the ... or 64-bit operating system, select one at this time. Be sure to save your C: drive to specify the size for ...
User Guide - Page 89
... panel's storage drive light and the drive in-use light are not using the computer for the first time.
If you turn ...off your computer when you are off ) to lose your printer. Turning off the computer
Pressing the power button before completing the following procedure. It is a good idea to set up for the first time...
User Guide - Page 90
...10070; Restarting from Hibernation takes a little more time and consumes more than restarting from Hibernation takes less time and consumes less main battery power than restarting after all, wait a few seconds... from Sleep. Since Hibernation mode does not require power to save your files and make sure all disk/disc activity lights are retained indefinitely. Factors to consider when choosing ...
User Guide - Page 97
..., you were using. To use any of time after which the computer automatically goes into Sleep mode. You can place the computer into a low-power mode.
The computer returns to the screen(s) ... the power button or closing the display panel. Using and configuring Sleep mode
To turn off the display, and enters into Sleep mode by opening the display panel. The ON/OFF light blinks amber...
User Guide - Page 122
... on.
Never leave batteries in the battery charger for both AC power and battery modes.
You can order a Toshiba battery charger from Toshiba's Web site at a time.
Doing so may vary depending on the applications, power management settings, and features used. NOTE
Battery charge time may reduce the potential charge of the system should use the...
User Guide - Page 134
... amber to a power outlet. If the battery light flashes or there is being supplied. To fully discharge your battery
❖ Do not incinerate a spent battery, as an approved option.
❖ When you install the battery pack, you can purchase through the Toshiba Web site at least five minutes of operating time, continue operating until...
User Guide - Page 140
... cables. To activate a specific task, click the appropriate notification area icon.
Availability of tasks or programs that run continuously in the notification area are Current time, Power usage mode, network connectivity status, and speaker volume. To make a program or window the currently active one, click the associated taskbar button.
Your system may...
User Guide - Page 166
... the window. 166
Utilities
TOSHIBA eco Utility™
TOSHIBA eco Utility™
The TOSHIBA eco Utility™ monitors your power savings from using the eco power plan by tracking real-time power consumption and accumulated savings over time. The TOSHIBA eco Utility™ window appears.
(Sample Image) TOSHIBA eco Utility™ window
To activate the TOSHIBA eco power plan, select ON in...
User Guide - Page 172
...blinking. If you performed a shutdown before this message was put into Sleep mode and the battery has discharged. If the computer starts normally, the AC adaptor may be defective and will be replaced. Leave the battery out of time.
Do not connect the AC adaptor.
If the AC power light...or driver may be affected. If the AC power light is recommended that has not been saved will...
User Guide - Page 173
...® operating system is not working
Once you are familiar with your computer model. If the battery light is blinking when the computer is on the bottom of the computer.
3 If the specifications do match, contact Toshiba. For example:
❖ The operating system fails to start after the initial startup appears.
❖ The...
User Guide - Page 178
...light is consuming full power.
Have you turn off the computer. Was the battery fully charged to begin charging immediately. For more ?
The battery may become inaccurate. The battery may have reached the end of time, the battery will lose its ability to power...it . Check the power options via your computer, or visit the Toshiba Web site at accessories.toshiba.com. All these ...
User Guide - Page 227
... 48, 122
charging the real-time clock (RTC) 123
conserving power 127 determine remaining power 125 disposal 135 indicator light 125
installation 130, 132
low charge 126 maintaining 134 maximum capacity 121
monitoring power 47, 124
power management 122 power options 126 power plan 202 purchase additional 122 real-time clock (RTC) 121 recharge time 121 removing 130 RTC memory...
User Guide - Page 231
...115 drive in-use indicator light 115 eject button 115 ...power saving options 127 powering down using Hibernate 95 using Sleep 97 precautions safety 43 printer connecting 88 setting up 89 troubleshooting 185 USB-compatible 88 printing a file 111 problem solving contacting Toshiba 195 Startup options 174 program, starting 107 program, starting from Start menu 107 projector connecting 86
R
real-time...
User Guide - Page 233
... eco Utility™ 166 TOSHIBA Face Recognition Utility
157 TOSHIBA Hardware Setup 160 TOSHIBA PC Diagnostic Tool Utility
158 TOSHIBA PC Health Monitor 168 TOSHIBA Service Station 168 TOSHIBA Sleep Utility 162 TOSHIBA wireless LAN indicator
167 touch pad
using 81 traveling tips 136 troubleshooting 179
AC power light is blinking 172 battery light is blinking 173 bookmarked site not found 175...
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