iFixit - Answers With Device "HP EliteBook 840 G4"

HP EliteBook 840 G4: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz 2.71 GHz, 16.0 GB (15.9 GB

Thu, 02 Apr 2026 17:58:15 -0700

Dear IFIXIT

reference mentioned subject, my computer run very slow ?

Any APP to test the system?

⟐ Answered April 02, 2026 at 17:58 MST

HP EliteBook 840 G4: "My laptop isn't charging anymore, but t

Sun, 08 Mar 2026 12:51:28 -0700

"My laptop isn't charging anymore, but the charger is fine. When I plug the charger into the laptop, the green light on the adapter keeps blinking."

⟐ Answered March 08, 2026 at 12:51 MST

HP EliteBook 840 G4: keyboard key stop working

Wed, 05 Nov 2025 06:07:08 -0700

my keyboard keys stop working one by one

⟐ Answered November 05, 2025 at 6:07 MST

HP EliteBook 840 G4: When my laptop goes into sleep mode, the screen stays black

Mon, 20 Oct 2025 07:30:53 -0700

When my laptop goes into sleep mode, the screen stays black and I have to restart it. What should I do? Other than that, the laptop works perfectly, so I don’t understand what could be causing it. My power saving mode is set to activate at 20%.

⟐ Answered October 20, 2025 at 7:30 MST

HP EliteBook 840 G4: Why is my cursor not responding to trackpad touch

Sun, 12 Oct 2025 01:03:01 -0700

The cursor on the screen stays in one spot, not responding when i use the trackpad. Sometimes, it moves only horizontally.

HP EliteBook 840 G4: Why there is a bubble like texture on my laptop's back logo?

Mon, 04 Aug 2025 03:14:21 -0700

There are some bubbles on My hp laptop's physical logo on the back looks like the paint is peeling but the bubbles are hard can't say it's air trapped in there because of the hardness of the bubbles + it's unusual for internal heating on that area and the laptop lives under my bed (no sun exposure)

HP EliteBook 840 G4: My laptop not turning on but when I press the power button it blink

Wed, 30 Jul 2025 22:02:46 -0700

How can I fix my laptop

⟐ Answered July 30, 2025 at 22:02 MST

HP EliteBook 840 G4: Why my pc show that the internet from ethernet is connected but it doe

Fri, 25 Jul 2025 00:10:46 -0700

Why my pc show that the internet is connected from the ethernet but don't work

⟐ Answered July 25, 2025 at 0:10 MST

HP EliteBook 840 G4: laptop not turning on but the fan is running

Mon, 21 Jul 2025 22:06:55 -0700

after turning my laptop on the fan is running for 7/8 seconds but display doesn't show anything and afrer 7/8 seconds it automatically turning off its self.

⟐ Edited July 21, 2025 at 22:06 MST

HP EliteBook 840 G4: My Internal Keyboard is clicking on its own.

Mon, 23 Jun 2025 01:59:59 -0700

My Internal Keyboard is clicking on its own. What should I do?

⟐ Answered June 23, 2025 at 1:59 MST

HP EliteBook 840 G4: Why won't my battery charge?

Tue, 15 Apr 2025 23:54:20 -0700

My HP EliteBook 840 G4's battery will not charge. Like at all. The only way I can use it is to plug it in. The person I bought it from said they bought a new battery for it but the problem has persisted. Can anybody please help?

⟐ Commented April 15, 2025 at 23:54 MST

HP EliteBook 840 G4: Laptop hanging frequently ands stops working

Thu, 20 Mar 2025 23:28:07 -0700

My laptop hangs minutes after i switch it on. Tried changing the ram and hard disk but has the same problem. What could be the problem?

⟐ Answered March 20, 2025 at 23:28 MST

HP EliteBook 840 G4: Why is my pc touch pad not working

Thu, 13 Mar 2025 07:13:54 -0700

Why is my pc touch pad not working

⟐ Answered March 13, 2025 at 7:13 MST

HP EliteBook 840 G4: I didn't turn it on

Wed, 01 Jan 2025 09:35:25 -0700

When I put the charger in it gives a signal but when I try to turn it on it doesn't turn on help me please

⟐ Answered January 01, 2025 at 9:35 MST

HP EliteBook 840 G4: Why is my audio device not working

Wed, 06 Nov 2024 04:53:48 -0700

sound device not working

⟐ Answer edited November 06, 2024 at 4:53 MST

HP EliteBook 840 G4: How can stop system diagnosis

Thu, 17 Oct 2024 19:31:11 -0700

How can stop system diagnosis

⟐ Answered October 17, 2024 at 19:31 MST

HP EliteBook 840 G4: Cooling fan not working properly

Wed, 16 Oct 2024 15:33:43 -0700

It have high sound

⟐ Answered October 16, 2024 at 15:33 MST

HP EliteBook 840 G4: Why my laptop automatic on when I insert battery

Tue, 15 Oct 2024 08:08:14 -0700

My laptop is automatic on when i insert battery and turn not off with any button

⟐ Commented October 15, 2024 at 8:08 MST

HP EliteBook 840 G4: My battery died fast

Wed, 11 Sep 2024 16:35:06 -0700

my laptop battery died fast and its just charge for 80% and its died also when it close

⟐ Answered September 11, 2024 at 16:35 MST

HP EliteBook 840 G4: Why are some keys on my keyboard not responding

Sun, 04 Aug 2024 02:52:50 -0700

Some buttons on my keyboard stop responding after some time