iFixit - Answers With Device "HP ProBook"

HP ProBook: Charger light blinks when plugged in but won't power on

Fri, 30 Aug 2024 10:35:08 -0700

I have a HP ProBook 6440b that won’t turn on. The charger LED blinks but the laptop will not turn on with or without the battery. I’m sure the battery is completely dead, but I don’t think that would prevent it from powering on. Does anyone know how to fix this?

⟐ Commented 八月 30, 2024 at 10:35 GMT-7

HP ProBook 4540s: How do I set up my fingerprint reader?

Tue, 08 Nov 2016 15:33:27 -0700

I’m wanting to set up my fingerprint reader, but I’m not sure which tools to use. Is there a certain program I need?

⟐ Answer accepted 十一月 08, 2016 at 15:33 GMT-7

HP ProBook 450 G2: HP Probook 450 G2 continuous light power and caps lock

Sat, 20 Sep 2025 07:07:20 -0700

Hi help

Laptop not switching on

Blank screen and continuous glow of Power button and Caps lock (no blinking sequence) when connected to a/c

What i have tried with no success

Remove battery and connect a/c
Reseat RAM
Remove power source and press power button for 20 seconds

regards

heres what its showing

⟐ Answered 九月 20, 2025 at 7:07 GMT-7

HP probook 4440s: My screen turns white when I turn it on

Tue, 10 May 2016 11:51:43 -0700

when i turn on my laptop my screen turns white ,but i can still hear it running and when i hooked it up to an external monitor and i can see on the monitor but not on my laptop screen. what is the problem? should i get a new screen?

⟐ Answered 五月 10, 2016 at 11:51 GMT-7

HP ProBook 6000: Hp laptop probook 6550b won't turn on

Mon, 14 Aug 2023 18:44:48 -0700

I have a hp laptop probook 6550b But won't turn on at all, even though I remove battery and plug in the charger but it's not turning on the indicator light always turn orange so can someone help me with that

⟐ Answered 八月 14, 2023 at 18:44 GMT-7

HP ProBook 450 G4: Laptop will not power on

Wed, 15 Mar 2023 12:00:59 -0700

When I plug in my laptop in the power button and the caps lock button light up for a second or 2 then go out. Then the power button and the wifi and the mute button come on for a second or 2 then go out. This happens twice then the laptop becomes unresponsive. I have replaced the power supply but it still acts the same. I have tried the 30 second power button reset and no luck. Any ideas on what to do next?

⟐ Answered 三月 15, 2023 at 12:00 GMT-7

HP ProBook 4540s: When I press the power button, nothing happens.

Wed, 08 Feb 2023 12:57:22 -0700

When I press my power button, nothing happens. How can I fix this?

⟐ Answered 二月 08, 2023 at 12:57 GMT-7

HP probook 4440s: Fan is not spinning on laptop.

Sun, 10 May 2015 04:54:38 -0700

My fan is not spinning causing the computer to get hot. How can I fix the fan?

⟐ Answer deleted 五月 10, 2015 at 4:54 GMT-7

HP ProBook 640 G2: Why my pc won't turn on?

Sat, 15 Mar 2025 09:19:06 -0700

I have a problem that when i click power button nothing happens and also when i plug the charger the battery button keep flashing orange light

how to fix this problem? ty

⟐ Commented 三月 15, 2025 at 9:19 GMT-7

HP ProBook 4530s: Hard Drive Not Found (3FO)

Thu, 20 May 2021 02:22:44 -0700

Hi, when i Power my laptop on this error comes out Hard drive error (3FO)

I replaced a new one HDD but still not getting off. Changed RAM Also. Then brought to Repairing shop they are saying to me It has failed MotherBoard. So what are you guys thinking of it? Should i change it? Help me!!

⟐ Commented 五月 20, 2021 at 2:22 GMT-7

HP ProBook 640 G4: I have an laptop hp probook 8th, it doesn't open … When I connect the

Fri, 19 Dec 2025 22:17:17 -0700

I have an laptop hp probook 8th, it doesn't open … When I connect the charger, it flashes in two colors white and yellow, and caps look press switch illuminates and turns off

⟐ Commented 十二月 19, 2025 at 22:17 GMT-7

HP ProBook 455 G4: screen does not turn on

Wed, 23 Oct 2024 08:51:29 -0700

My screen reduces to turn on when I press the power button but when I insert the charger, the light blinks, indicating that's it's charging but the screen does not turn on .

⟐ Commented 十月 23, 2024 at 8:51 GMT-7

HP ProBook 450 G1: My screen is glitching

Sat, 24 Aug 2024 06:01:33 -0700

Screen keeps glitching after cable repair

⟐ Answered 八月 24, 2024 at 6:01 GMT-7

HP probook 4440s: How do I disconnect my CMOS battery

Thu, 01 Oct 2015 07:44:54 -0700

How do I disconnect my CMOS battery so I can reset my BIOS Password?

⟐ Commented 十月 01, 2015 at 7:44 GMT-7

HP ProBook 4530s: My laptop is lag

Wed, 22 May 2019 12:24:06 -0700

it is so much lag i dont no why please i need an advice

⟐ Answer deleted 五月 22, 2019 at 12:24 GMT-7

HP Probook 4425s: PC won't turn on with or without charger, battery lamp blinking white

Tue, 23 Jan 2024 00:46:20 -0700

I got a notification to replace the laptop battery, so I bought a new battery and adapter. But the laptop wouldn't turn on without charger plugged in, so I plugged in the charger. When charging, the indicator tells it is charging but the battery percentage doesn't increase nor decrease, so I always plug in the charger when I'm using laptop. Every time I plug in the charger, the laptop suddenly turns itself on without me pressing the power button. Then a few days later my laptop wouldn't turn on with or without a charger/battery. Every time I connect the charger, the battery light only blinks white.

I left my laptop for days and after that, I tried to turn it on again with the battery and connected to the charger, it worked, the laptop turned on. But after a while it turns off itself again and when I want to turn it on the same thing happens again, the laptop doesn't turn on and the battery light flashes white. I have try with the old AC and battery, but it is the same, blinking white battery light. Even though I removed the battery, the laptop should be able to turn on if it is connected to a charger, right?Does someone know what went wrong? Please help me.

Actually my laptop is HP Probook 5220m.

⟐ Answered 一月 23, 2024 at 0:46 GMT-7

HP ProBook 450 G4: Why my pc automatically entering bios mode, when turning it on

Wed, 10 Jul 2024 23:02:50 -0700

My pc entering bios setup when turning it on

⟐ Commented 七月 10, 2024 at 23:02 GMT-7

HP ProBook 4520s: Help! My fan is so loud! What is going on?

Tue, 07 Jun 2022 11:03:57 -0700

My HP ProBook 4520s fan is really loud and seems to be running a lot. My laptop is warmer than usual too.

⟐ Commented 六月 07, 2022 at 11:03 GMT-7

HP ProBook 450 G5: Won't turn on or charge.

Thu, 12 Mar 2026 13:26:03 -0700

My laptop won't turn on or charge. No indicator light. Checked the cable and used another known working cable and still nothing. Does anyone know what the issue is?

⟐ Commented 三月 12, 2026 at 13:26 GMT-7

HP ProBook 430 G4: My screen just wont turn on but the system does (please help )

Mon, 23 Jun 2025 04:48:42 -0700

My system goes on and off before the screen just stops working but the system do turn on, not the screen

⟐ Answered 六月 23, 2025 at 4:48 GMT-7