HP ProBook 6455b Support Question
HP ProBook 6455b Support Question
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Question posted by 45Rwayno on August 17th, 2014
6550b Power Light Blink And Laptop Won't Turn On
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Current Answers
Answer #1: Posted by freginold on November 3rd, 2014 4:28 AM
freginold
Member since:
December 20th, 2011 Points: 23,253,885
Member since:
December 20th, 2011 Points: 23,253,885
When a laptop won't power on, it's often 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. Without being able to troubleshoot the laptop, it's almost impossible to say for sure which of the components is causing the problem
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.
Answer #2: Posted by freginold on November 3rd, 2014 4:28 AM
freginold
Member since:
December 20th, 2011 Points: 23,253,885
Member since:
December 20th, 2011 Points: 23,253,885
When a laptop won't power on, it's often 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. Without being able to troubleshoot the laptop, it's almost impossible to say for sure which of the components is causing the problem
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 HP ProBook 6455b Manual Pages
HP ProBook User Guide - Windows 7 - Page 13
... your computer. When the battery reaches a critical battery level, the battery light begins blinking rapidly. ● Off: If the computer is not plugged into an external power source, the light turns off or in the computer are off. ● On: The computer is on. ● Blinking: The computer is in the Sleep state. ● Off: The...
HP ProBook User Guide - Windows 7 - Page 14
... visible whether the computer is open or closed .
†The 2 power lights display the same information. The wireless light on the wireless button is visible only when the computer is open. The power light on . ● Amber: Speaker sound is off.
(10) Volume down light
Blinking: The volume down button is being used to decrease the speaker...
HP ProBook User Guide - Windows 7 - Page 15
... the computer is not plugged into an external power source, the light turns off when all batteries in the computer are off. ● On: The computer is the only available power source has reached a low battery level. When the battery reaches a critical battery level, the battery light begins blinking rapidly. ● Off: If the computer is...
HP ProBook User Guide - Windows 7 - Page 16
Component
Description
(4)
Drive light
(5)
QuickLook light
● Blinking turquoise: The hard drive or optical drive (select models only) is being used to the illustration that most closely matches your computer.
6 Chapter 1 Features The wireless light on the front of the computer is visible whether the computer is open . The power light on .
*The 2 wireless lights display the same...
HP ProBook User Guide - Windows 7 - Page 22
... is not plugged into an external power source, the light turns off when all batteries in the computer are off.
● On: The computer is on.
● Blinking: The computer is in the Sleep state.
● Off: The computer is off until the battery reaches a low battery level.
● Blinking turquoise: The hard drive or...
HP ProBook User Guide - Windows 7 - Page 51
....
The display indicates which stores your work before initiating Sleep. The screen clears, and power is saved to simultaneous display on the computer keyboard, follow either of these steps: ... about system hardware components and the system BIOS version number. Using the keyboard 41
The power lights blink when the computer is connected to the system. CAUTION: To reduce the risk of the...
HP ProBook User Guide - Windows 7 - Page 74
... ▲ Briefly press the power button
When the computer exits Sleep, the power lights turn on and your work returns to a hibernation file on external power. 5 Power management
Setting power options
Using power-saving states
The computer has two power-saving states enabled at the ... in Windows® Control Panel. If the computer is initiated, the power lights blink and the screen clears.
HP ProBook User Guide - Windows 7 - Page 82
... reaches a low battery level, the battery light blinks. Preferences set at the factory. ● Blinking amber: A battery that is on the display. ● Check the Power saver setting in Power Options. ● Remove the battery from the computer when it is not plugged into an external power source, the light turns off until the battery reaches a low battery...
HP ProBook User Guide - Windows Vista - Page 13
... the Sleep state. ● Off: The computer is off until the battery reaches a low battery level. Lights
NOTE: Refer to full charge capacity. ● Blinking amber: A battery that is not plugged into an external power source, the light turns off when all batteries in Hibernation. ● Amber: A battery is charging. ● Turquoise: A battery is close...
HP ProBook User Guide - Windows Vista - Page 15
... is off until the battery reaches a low battery level. When the battery reaches a critical battery level, the battery light begins blinking rapidly. ● Off: If the computer is plugged into an external power source, the light turns off when all batteries in Hibernation. ● Amber: A battery is charging. ● Turquoise: A battery is close to full...
HP ProBook User Guide - Windows Vista - Page 22
... light turns off when all batteries in the computer are off.
● On: The computer is on .
● Amber: All wireless devices are fully charged. Right-side components
NOTE: Refer to full charge capacity.
● Blinking amber: A battery that most closely matches your computer.
12 Chapter 1 Features Component (3) Wireless light (4) Power light (5) Battery light
(6) Drive light (7) Speaker...
HP ProBook User Guide - Windows Vista - Page 50
The power lights blink when the computer is connected to the computer, fn+f4 alternates the screen image from computer ...hardware components and the system BIOS version number.
The function of the hotkey command.
- To exit Sleep, briefly press the power button.
Switches the screen image among other devices that are charging and reports the amount of Sleep. The fn+f4 hotkey ...
HP ProBook User Guide - Windows Vista - Page 73
... press the power button
Setting power options 63 When Sleep is in the Sleep state or in any of inactivity when running on the hard drive and the computer turns off .... while the computer is initiated, the power lights blink and the screen clears.
5 Power management
Setting power options
Using power-saving states
The computer has two power-saving states enabled at the factory to...
HP ProBook User Guide - Windows Vista - Page 81
...
The information in Windows Control Panel. Some lowbattery alerts and system responses can be changed using Power Options in this section describes the alerts and system responses set using Power Options do not restore power until the power lights turn off until the battery reaches a low battery level.
Maximum discharge time gradually shortens as the battery...
HP ProBook User Guide - Windows XP - Page 13
... HP Mobile Broadband Module, and/or a Bluetooth® device, is on.
● Amber: All wireless devices are off. ● On: The computer is on. ● Blinking: The computer is in Standby. ● Off: The computer is not plugged into an external power source, the light turns off until the battery reaches a low battery level.
HP ProBook User Guide - Windows XP - Page 15
... is not plugged into an external power source, the light turns off when all batteries in the computer are off. ● On: The computer is on. ● Blinking: The computer is in Hibernation. ● Amber: A battery is charging. ● Turquoise: A battery is close to full charge capacity. ● Blinking amber: A battery that is the only...
HP ProBook User Guide - Windows XP - Page 22
...
● Blinking amber: A battery that most closely matches your computer.
12 Chapter 1 Features If the computer is not plugged into an external power source, the light turns off when all batteries in the computer are off.
● On: The computer is on .
● Amber: All wireless devices are fully charged.
Component (3) Wireless light (4) Power light (5) Battery light
(6) Drive light...
HP ProBook User Guide - Windows XP - Page 50
... from the computer using the external VGA video standard. For example, you can also alternate images among display devices connected to the hard drive. The power lights blink when the computer is in Standby, the computer initiates Hibernation and the information stored in system memory. NOTE: In all installed batteries. The fn+f4...
HP ProBook User Guide - Windows XP - Page 72
... of networking connection or perform any computer functions while the computer is initiated, the power lights blink and the screen clears. NOTE: You cannot initiate any of inactivity when running on the hard drive and the computer turns off . Select Start > Turn Off Computer > Stand By. If Stand by from or writing to memory. Your...
HP ProBook User Guide - Windows XP - Page 81
... actions for the computer reaches a low battery level, the battery light blinks. Resolving a low battery level when external power is available ▲ Connect one of losing information when the computer reaches a critical battery level and has initiated Hibernation, do not restore power until the power lights turn off the computer or initiate Hibernation. 2. Exit Hibernation by briefly...
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