iFixit - Answers With Device "HP ProBook 400 Series"

HP ProBook 440 G8: Why my laptop is not charging?

Tue, 05 May 2026 06:12:38 -0700

when I connect charger the indicator turns on for few seconds and turns off. After few seconds it starts bliing for a while and stops. What could be the problem? How can i fix this?

I have tried disconnecting battery and plugging charger and pressing power button for 20-30 sec. It didn’t work

⟐ Edited by author May 05, 2026 at 6:12 MST

HP ProBook 450 G1: Why my pc doesn't start anymore

Mon, 04 May 2026 10:57:28 -0700

My HP ProBook got wet with water and now it won’t turn on. At one point, after cleaning it and letting it dry, it turned on, but the fan wasn’t spinning. Then I checked it again, and after that it stopped turning on completely. Now there are no indicator lights at all, except the one near the charging port

HP ProBook 440 G8: HP Probook 440 G8 Notebook PC Stuck Issue

Wed, 29 Apr 2026 21:43:14 -0700

HP Probook 440 G8 Notebook PC Stuck Issue, Randomnly and frequently PC gets struck

HP ProBook 430 G2: Why This model device bluetooth does not connect with wireless earphon

Tue, 28 Apr 2026 11:23:55 -0700

the Bluetooth of this device model is not connect with e=wireless earphone why?

⟐ Commented April 28, 2026 at 11:23 MST

HP ProBook 450 G7: My Fan is trying to start but it's failing

Fri, 24 Apr 2026 10:44:48 -0700

My fan is failing to start it keeps throttling but doesn't start. I tried cleaning it and got a lot of dirt out but I know the dirt wasn't the problem so what is?

I also attempted using wd40 on it but it also didn't help so I think it might be something with the fan or something else maybe.

⟐ Answer accepted April 24, 2026 at 10:44 MST

HP ProBook 445 G8: Black screen and blinking Caps-lock

Thu, 23 Apr 2026 23:24:21 -0700

I have an HP ProBook 445 G8 from 2021 or 2022 running Windows 11. I've ran into an issue where the system won't boot, instead giving me a black screen, the light of the F5-key (mute) is on and the Caps-lock key blinks 5 times slow, then the fans start audibly spinning.

I have already tried putting the RAM stick in the other slot (a friend of mine with the same system had a similar issue when the RAM turned out to be loose) but to no avail. It also sometimes does boot (I haven't found a pattern to that) but it doesn't take long for it to cut to black again. Lastly I have found that the laptop will often boot after hitting the left half of the keyboard.

Any advice would be greatly appreciated, thank you very much in advance.

⟐ Commented April 23, 2026 at 23:24 MST

HP ProBook 440 G8: My mic is not working in whatsapp or recording and video recording

Wed, 22 Apr 2026 10:39:40 -0700

my laptop mic is not working on whatsapp calls and not record my voice on video recording but work properly on google chrome i also check my setting but whatsapp and camera app is allow to use microphone

plz help me with any suggestion

HP ProBook 430 G1: Laptop open with black screen and fan is running

Tue, 14 Apr 2026 22:03:23 -0700

Laptop open with black screen and fan is running

HP ProBook 450 G7: Laptop is not turning on

Tue, 07 Apr 2026 09:52:55 -0700

My laptop is getting turn on but it's showing blank screen and making some beep sound

⟐ Commented April 07, 2026 at 9:52 MST

HP ProBook 430 G5: Why is my screen black when I press power button and the fan starts

Sun, 29 Mar 2026 22:09:09 -0700

The screen doesn't start it remains black the fan start and just nothing happens

⟐ Commented March 29, 2026 at 22:09 MST

HP ProBook 450 G5: Why's my laptop screen off but the keyboard light is on

Sat, 28 Mar 2026 19:46:25 -0700

My HP ProBook 640 G2 laptop screen is off but the keyboard lights is on whenever I boot the laptop.I have tried hard booting and even removing the battery but still the screen won't turn on despite the keyboard lights, power button light and wifi lights turned on

⟐ Answered March 28, 2026 at 19:46 MST

HP ProBook 440 Series: How do I get this stripped screw out so I can access the ssd

Sun, 22 Mar 2026 23:50:00 -0700

Ive been trying to get this stripped screw out with a rubberband gorilla glue and whatever i could try but ive just made it worse i need a reliable solution because this is crazy

⟐ Answered March 22, 2026 at 23:50 MST

HP ProBook 445 G1: Why is my laptop not giving sound on its own

Tue, 17 Mar 2026 12:07:59 -0700

Why is my laptop not giving sound on its own

HP ProBook 470 G0: bliká napájecí dioda,nejde zapnout power LED is flashing

Mon, 16 Mar 2026 19:55:43 -0700

bliká napájecí dioda,nejde zapnout,zřejmě zkrat na desce

Translate Czech - English

The power LED is flashing, it won't turn on. The power LED is flashing, it won't turn on. It's probably a short circuit on the board.

⟐ Edited March 16, 2026 at 19:55 MST

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 March 12, 2026 at 13:26 MST

HP ProBook 430 G1: My screen doesn't come on but the system can show through projector

Wed, 11 Mar 2026 00:45:21 -0700

My screen doesn't come on but the system can show through projector or external monitor. The screen itself is not bad as it works with another laptop.

⟐ Answer edited March 11, 2026 at 0:45 MST

HP ProBook 430 G8: Unknown SMD component, now melted on motherboard

Thu, 26 Feb 2026 07:24:10 -0700

Hi,

I am trying to identify a component on my HP Probook 430 G8 laptop Motherboard. I accidentally shorted the battery to this component.

Motherboard :

Model X8P

Year 2020

DA0X8PMB8F0 Rev: F

See photos of the component. I have lifted a trace when cleaning the area, but I believe it is fixable. I bought a 2nd laptop to try and help me get the first one working. I de-soldered what what looks to be the same component from the donor laptop.

The component is an 0603 from measuring 1.6mm between the solder tabs.

I used my DER EE DE-5000 LCR meter and get:

0.5 millihenry

0.010 milliohms

0.9 to 1.1 nanofarads

I am not sure what to order. It doesn't look like a capacitor, the resistance seems to low to be a resistor, and I can't find 0.5 millihenry inductors..... can you please help me order the correct part?

Broken laptop (Below)

(The orange led at the charge port fades in and out as orange)

Donor board whose part I measured. (Below)

I have now MAYBE identified the mosfet that is connected to the component.

Final repair

⟐ Commented February 26, 2026 at 7:24 MST

HP ProBook 430 G6: Keeps refusing to turn back on normally

Mon, 23 Feb 2026 02:19:13 -0700

Hey so when i flip open my laptop it just beeps once on the capslock key if i long press for like ten mins fans work it charges it used to turn on but now it doesn't

⟐ Answer edited February 23, 2026 at 2:19 MST

HP ProBook 450 G3: it starts to boot when charger is connected. but nothing is displayed

Mon, 16 Feb 2026 23:35:19 -0700

is starts to boot but, nothing displayed on the screen.

and also its fan starts then stop immidiatly.

⟐ Answer edited February 16, 2026 at 23:35 MST

HP ProBook 440 G8: Help HP Probook 440 G8 Blinking Light

Mon, 09 Feb 2026 01:45:06 -0700

Hi Everyone

I have a HP Probook 440, Motherboard dax8qamb8d0 rev-d, This laptop once connected only take 0,007 amp (see the picture bellow)

and the light start blinking (image bellow), I don't know what could be, maybe something with the BIOS I don't know. I hope you can help me.

⟐ Answered February 09, 2026 at 1:45 MST