iFixit - Answers With Device "HP ProBook 400 Series"

HP ProBook 450 G3: Battery lock in mechanism is broken. Any advice?

Mon, 17 Aug 2026 10:15:52 -0700

Hey there the locking mechanism has been broken and I'm looking to fix it. Any advice appreciated. I have a tiny bit of experience opening laptops and phones.

⟐ Answer edited August 17, 2026 at 10:15 MST

HP ProBook 450 G0: Why does my laptop keep restarting on its own when I shut it down?

Mon, 17 Aug 2026 05:42:43 -0700

I have got it checked by several specialists but no fault is found, even reinstalled the windows

⟐ Answered August 17, 2026 at 5:42 MST

HP ProBook 430 G1: Keyboard lights activation on my Laptop

Tue, 11 Aug 2026 10:47:45 -0700

My HP Laptop keyboard lights AMD PRO A6-8500B R5, 6 Compute Cores 2C+4G 1.60 GHz have not been working for some time and how do I activate them again.

⟐ Commented August 11, 2026 at 10:47 MST

HP ProBook 430 G2: Why power button and caps lock flashes once then turns off?

Wed, 22 Jul 2026 08:19:06 -0700

Good day, i have Hp Probook 430 G2 laptop. When i plug it in charging LED indicator lits but when i start it up the power and caps lock LEDs blink once and shuts down immediately together with charging LED indicator and the charging LED indicator turns on again. Already tried hard resetting it by disconnecting the battery and the charger and pressing the power button for couple of minutes. I tried different charger, recovery of BIOS using bootable flash disk but not responding also tried replacing and cleaning the RAM. What could be the possible problem? Thanks

⟐ Commented July 22, 2026 at 8:19 MST

HP ProBook 440 G2: My laptop keeps on blinking when plugged in power

Mon, 20 Jul 2026 08:29:20 -0700

hello my HP 440 G2 when plugged into power the charging light and the power light keep blinking and wont turn on

⟐ Commented July 20, 2026 at 8:29 MST

HP ProBook 440 G4: HP Laptop Keyboard only works when restarting

Thu, 16 Jul 2026 08:25:59 -0700

Hi there,

My laptop keyboard doesn't work when I power up the laptop, but when I restart it it works. It's a HP ProBook 440 G4. Any ideas please?

Thank you

⟐ Answered July 16, 2026 at 8:25 MST

HP ProBook 450 G5: How to replace the thermal paste

Sun, 12 Jul 2026 08:00:28 -0700

Because I can't figure out how to get it apart for my new used business class laptop witch is the hp probook 450 g5

⟐ Answer accepted July 12, 2026 at 8:00 MST

HP ProBook 430 G6: My laptop’s start up is slow

Mon, 29 Jun 2026 08:02:12 -0700

my laptop is not starting at all very quickly so how to fix it that slow motions

HP ProBook 450 G1: How do I turn on my laptop when it is even not turning on after replac

Sun, 28 Jun 2026 11:03:51 -0700

How do I turn my laptop even if I have changed the battery certain of time even after removing the battery inter connecting the power cord it doesn't turn on file battery in its place power cable on impressing the button for 1 minute it doesn't turn on

HP ProBook 440 G5: What to do when you are trying to cast TV and laptop but the tv nshowi

Wed, 24 Jun 2026 12:55:06 -0700

What to do when you are trying to cast TV and laptop but the tv name isn't showing

HP ProBook 450 G6: Why is my PC not booting?

Wed, 24 Jun 2026 00:12:21 -0700

It's showing blue screen, and it say PC need to be repaired

HP ProBook 430 G1: Can't turn on

Tue, 16 Jun 2026 04:06:29 -0700

When pressing the power button, the laptop only turns on for a moment (about 3 seconds) then turns off again

⟐ Commented June 16, 2026 at 4:06 MST

HP ProBook 430 G6: My laptop's problem is the screen sometimes ok and sometimes its not

Fri, 12 Jun 2026 05:35:00 -0700

my laptop's screen sometimes it works and sometimes time it turns off even when i charged it every thing worked also the system sounds but the screen didnt and when i pluged it to a monitor it worked

please if anyone knows hpw can i fix it please contact me

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

Tue, 02 Jun 2026 04:09:51 -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 accepted June 02, 2026 at 4:09 MST

HP ProBook 440 G5: Why is my "tab" key not working

Thu, 28 May 2026 11:00:21 -0700

basicaly its been months and my tab key is not working , when i click alt+tab to switch tabs it doesnt work becuase my tab key is broken , what should i do to fix it at home?

⟐ Answered May 28, 2026 at 11:00 MST

HP ProBook 430 G4: Why does the laptop has issues with ROM

Mon, 18 May 2026 14:19:18 -0700

I run a check on the bugs bit now my laptop needs configurations

⟐ Commented May 18, 2026 at 14:19 MST

HP ProBook 445 G6: Can't update HP Probook 445 R G6 BIOS or Change RAM

Fri, 15 May 2026 21:38:48 -0700

Recently bought HP Probook 445 R G6 - AMD Ryzen 5 with 8 GB RAM

1. Working fine with Windows 10 with little high HEAT generation without power adaptor.

2. While updating BIOS without POWER ADAPTOR - LAPTOP went in COMA state.

3. Tried replacing RAM, HARD Reset etc.

Windows Key + B,

Windows Key + V,

Shift + CTRL+ Windows Key + B

There is no Visual response.

4. There are 2 Long Beep and 1 Short Beep

5. While Updating BIOS via USB stick - HP Firmware Update and Recovery doesn't recognize USB Drive which is shown in Windows 10 Explorer. Tried different USB with different Ports.

Any Solution

⟐ Answered May 15, 2026 at 21:38 MST

HP ProBook 430 G5: How to remove the bios password

Mon, 11 May 2026 09:28:04 -0700

i would like to know how to remove the bios password, removing the battery, or using other tools didn’t work at all.

⟐ Commented May 11, 2026 at 9:28 MST

HP ProBook 450 Series: no internet connection and Bluetooth connection

Fri, 08 May 2026 11:05:04 -0700

no internet and Bluetooth connection

⟐ Answered May 08, 2026 at 11:05 MST

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