HP ProBook 6455b Support Question
HP ProBook 6455b Support Question
Find answers below for this question about HP ProBook 6455b - Notebook PC.Need a HP ProBook 6455b manual? We have 7 online manuals for this item!
Question posted by phillmeyli on September 20th, 2014
Hp Probook 6455b Won't Turn On Power Light Flashing
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Request from emperorjoe19 on October 30th, 2021 3:51 PM
My hp probook 6455b is not displaying after turning it on. The wireless light remains orange colour. But whenever the wireless light changes to blue, the screen starts displaying.
My hp probook 6455b is not displaying after turning it on. The wireless light remains orange colour. But whenever the wireless light changes to blue, the screen starts displaying.
Current Answers
Answer #1: Posted by freginold on November 3rd, 2014 4:29 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
... power source, the light turns off until the battery reaches a low battery level. Identifying hardware 3
When the battery reaches a critical battery level, the battery light ...
Wireless lights (2)*
(2)
Power lights (2)†
(3)
Battery light
Description
● Blue: An integrated wireless device (select models only), such as a wireless local area network (WLAN) device, the HP Mobile ...
HP ProBook User Guide - Windows 7 - Page 14
... the same information.
The power light on the front of the computer is visible whether the computer is open . Component
Description
(4)
Drive light
(5)
QuickLook light
● Blinking turquoise: The hard drive or optical drive (select models only) is being accessed.
● Amber: HP 3D DriveGuard has temporarily parked the hard drive.
● On: The computer...
HP ProBook User Guide - Windows 7 - Page 15
If the computer is not plugged into an external power source, the light turns off when all batteries in the computer are off... battery level. Component
(1)
Wireless lights (2)*
(2)
Power lights (2)†
(3)
Battery light
Description ● Blue: An integrated wireless device (select models only), such
as a wireless local area network (WLAN) device, the HP Mobile Broadband Module, and/or ...
HP ProBook User Guide - Windows 7 - Page 16
...is open or closed . The power light on the front of the computer is visible whether the computer is open . Component
Description
(4)
Drive light
(5)
QuickLook light
● Blinking turquoise: The ... ● Amber: Speaker sound is off , HP QuickLook must be enabled in use HP QuickLook when the computer is off .
(10) Volume down light
Blinking: The volume down button is being used...
HP ProBook User Guide - Windows 7 - Page 22
... accessed.
● Amber: HP 3D DriveGuard has temporarily parked the hard drive. Right-side components
NOTE: Refer to full charge capacity.
● Blinking amber: A battery that most closely matches your computer.
12 Chapter 1 Features Produces sound. If the computer is not plugged into an external power source, the light turns off when all batteries...
HP ProBook User Guide - Windows 7 - Page 74
... Power management With the computer on external power. To exit Sleep: ▲ Briefly press the power button
When the computer exits Sleep, the power lights turn on the hard drive and the computer turns ... card. Initiating and exiting Sleep
The system is initiated, the power lights blink and the screen clears. NOTE: When HP 3D DriveGuard has parked a drive, the computer will not initiate...
HP ProBook User Guide - Windows 7 - Page 75
... return to the screen.
Using power plans
A power plan is running on battery or external power. You can help you stopped working. Right-click the Show hidden icons icon (the arrow at the far right of system settings that manages how the computer uses power.
To initiate Hibernation: 1. The power lights turn on and your work returns...
HP ProBook User Guide - Windows 7 - Page 83
... are onboard aircraft. Turn on the computer. Remove the discharged battery, and then insert a charged battery. 3. or -
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...
HP ProBook User Guide - Windows 7 - Page 88
.... 2. Connect the AC adapter to the computer and to use the Windows Shut down .
78 Chapter 5 Power management Turn on the computer.
● If the power lights turn on, the AC adapter is functioning properly. ● If the power lights remain off, the AC adapter is shut down the computer under any of the following symptoms: ●...
HP ProBook User Guide - Windows 7 - Page 179
...flash media reader 149 parallel port 149 serial port 149 smart card slot 150 USB port 149
ports 1394 13, 97 DisplayPort 14 eSATA/USB 14 external monitor 15, 51 serial 14 USB 13, 14, 95
power connecting 68 conserving 76
Power Assistant 67 power button, identifying 7, 8 power connector, identifying 15 power cord, identifying 19 power light... 82 Disk Defragmenter 82 HP Connection Manager 23 recovery ...
HP ProBook User Guide - Windows Vista - Page 13
..., the light turns off until the battery reaches a low battery level.
Component
(1)
Wireless lights (2)*
(2)
Power lights (2)†
(3)
Battery light
Description
● Blue: An integrated wireless device (select models only), such as a wireless local area network (WLAN) device, the HP Mobile Broadband Module, and/or a Bluetooth® device, is the only available power
source has...
HP ProBook User Guide - Windows Vista - Page 14
... front of the computer is visible whether the computer is open or closed .
†The 2 power lights display the same information. The light on or HP QuickLook is in use HP QuickLook when the computer is off .
(10) Volume down light
Blinking: The volume down button is being used to decrease the speaker volume.
(11) Volume...
HP ProBook User Guide - Windows Vista - Page 15
... HP Mobile Broadband Module, and/or a Bluetooth® device, is on . ● Blinking: The computer is in the Sleep state. ● Off: The computer is off or in the computer are off until the battery reaches a low battery level. If the computer is not plugged into an external power source, the light turns off...
HP ProBook User Guide - Windows Vista - Page 16
... the same information.
The power light on the wireless button is visible only when the computer is open or closed .
Component
Description
(4)
Drive light
(5)
QuickLook light
● Blinking turquoise: The hard drive or optical drive (select models only) is being accessed.
● Amber: HP 3D DriveGuard has temporarily parked the hard drive.
● On: The...
HP ProBook User Guide - Windows Vista - Page 22
... Wireless light (4) Power light (5) Battery light
(6) Drive light (7) Speaker
Description
● Blue: An integrated wireless device (select models only), such as a wireless local area network (WLAN) device, the HP Mobile ...A battery is close to the illustration that is plugged into an external power source, the light turns off until the battery reaches a low battery level.
● Blinking ...
HP ProBook User Guide - Windows Vista - Page 73
... initiate Sleep in Windows® Control Panel. 5 Power management
Setting power options
Using power-saving states
The computer has two power-saving states enabled at the factory to initiate Sleep after 15 minutes of inactivity when running on the hard drive and the computer turns off . NOTE: When HP 3D DriveGuard has parked a drive, the computer...
HP ProBook User Guide - Windows XP - Page 13
...
Wireless lights (2)*
(2)
Power lights (2)†
(3)
Battery light
Description
● Blue: An integrated wireless device (select models only), such as a wireless local area network (WLAN) device, the HP Mobile ...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 ...
HP ProBook User Guide - Windows XP - Page 15
...
Wireless lights (2)*
(2)
Power lights (2)†
(3)
Battery light
Description ● Blue: An integrated wireless device (select models only), such
as a wireless local area network (WLAN) device, the HP Mobile ...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 ...
HP ProBook User Guide - Windows XP - Page 22
... models only) is plugged into an external power source, the light turns off or in the computer 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
Description
● Blue: An...
HP ProBook User Guide - Windows XP - Page 72
... the list. Select Start > Turn Off Computer > Stand By. Select Stand by is in Standby or in Windows® Control Panel. NOTE: When HP 3D DriveGuard has parked a drive....
With the computer on, you can be turned off . Exiting Standby is initiated, the power lights blink and the screen clears. Click the down arrow. Power settings and timeouts can initiate Standby in Standby,...
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