iFixit - Answers With Device "HP EliteBook 850 Series"

HP EliteBook 850 G3: Power LED blinks white and orange

Fri, 12 Jun 2026 14:51:56 -0700

This is the second machine I've seen in a week with the same problem, or at least very similar.

The one on my bench presently is an Elitebook 850 G8, the one I replaced a system board on was an Elitebook 845 G7. As soon as any type of power is connected, either battery or AC adapter, the charger LED will turn on white, but blink amber simultaneously. I believe it blinks 10 times. I have been unable to find any documentation for this specific error. This persists even if I remove connections from the system board to any other hardware aside from whichever power I am connecting. Even trying to power on with no RAM gives this error, will not beep/blink to indicate the system does not detect RAM. I do not even need to indicate power on for this to occur. As soon as there is enough contact with whichever connector to transmit the necessary power, it starts.

I have even tried running a BIOS recovery to no avail. This 850 G8 on my bench seems as though it will try to power, keyboard backlight will come up, Caps lock LED will light steady, no blink codes. It's under warranty, so ultimately it's probably going to get a new system board, but I want to know what this error is.

⟐ Commented June 12, 2026 at 14:51 MST

HP EliteBook 850 G8: How do I replace the keyboard?

Fri, 15 Mar 2024 21:01:09 -0700

How do I replace the keyboard?

⟐ Answered March 15, 2024 at 21:01 MST

HP EliteBook 850 G5: I have a blue screen error

Tue, 07 Feb 2023 11:11:55 -0700

There is a problem called blue screen error

⟐ Edited February 07, 2023 at 11:11 MST

HP EliteBook 850 G2: How can I reset BIOS password?

Sun, 29 Mar 2026 07:24:01 -0700

I have purchased a second-hand laptop and found the BIOS is password protected?

Is there a way to reset/remove BIOS password on this particular laptop?

I have tried removing CMOS battery but this has no effect (I believe BIOS password is held in NVRAM on this model).

HP say the only way to remove the BIOS password is to replace the motherboard which I am not willing to do as apart from being able to access the BIOS, the laptop is running fine.

⟐ Commented March 29, 2026 at 7:24 MST

HP EliteBook 850 G1: The part for indicating charging is blinking white and orange

Thu, 18 Sep 2025 03:58:28 -0700

I used my PC in the afternoon and forgot to turn it off and slept. When I woke up and plugged the PC, the charging light was blinking white and orange repeatedly and the computer won't turn on. Although I unplugged the PC, the light is still blinking for 4 hours now. Please help, this is my fourth PC in 2 years

⟐ Answered September 18, 2025 at 3:58 MST

HP EliteBook 850 G4: My sim slot is not working

Fri, 27 Mar 2026 06:25:46 -0700

Why is my sim slot not working

⟐ Answered March 27, 2026 at 6:25 MST

HP EliteBook 850 G5: The speakers Conexant ISST Audio

Sat, 25 Oct 2025 08:53:10 -0700

Speakers are not working anymore

⟐ Answered October 25, 2025 at 8:53 MST

HP EliteBook 850 G3: Flashing power light, not turning on

Wed, 21 Feb 2024 16:00:08 -0700

Hi everyone, I have this HP EliteBook 850 G3 which has suddenly stopped powering on. It was working fine last night but coming to it this morning it won't power on anymore, all I get is a few flashes from the power light. The keyboard backlight comes on and so do the mute and WiFi lights. I've tried hard resetting and removing the battery. I can't seem to find any code that matches the flashing on this.

Any help would be appreciated. Thanks in advance.

⟐ Commented February 21, 2024 at 16:00 MST

HP EliteBook 850 G3: Do not know how to activate the simcard icon?

Mon, 17 Apr 2023 12:42:19 -0700

There is a place for a SimCard in my laptop But I don't know how to turn it on.

⟐ Answer edited April 17, 2023 at 12:42 MST

HP EliteBook 850 G4: How to replace a standard LCD display, with a touchscreen one

Tue, 06 Sep 2022 18:10:43 -0700

I was wondering how I would go about putting a touchscreen in my non touchscreen computer, as supposedly they are interchangeable between models

⟐ Answer accepted September 06, 2022 at 18:10 MST

HP EliteBook 850 G2: Why is my screen not showing and the keyboard keeps going on and off?

Fri, 30 Oct 2020 13:37:07 -0700

My power adapter is overheating and when I turn on the laptop it keeps going on and off,the display screen is not showing

⟐ Answer accepted October 30, 2020 at 13:37 MST

HP EliteBook 850 G2: My device doesnt powering on.

Wed, 07 Jan 2026 04:52:59 -0700

Device doesnt powering on..with battery or without battery, only charger.

When i press power on button,only keyboard lights turn on for a second, not ndisplay.after a second it turns off keyboard light too..

I opened the case.The fan spins when device got power.

⟐ Answered January 07, 2026 at 4:52 MST

HP EliteBook 850 G1: laptop blinking light 9 times without turning on

Thu, 21 Nov 2024 21:41:17 -0700

my laptop blinks light 9 times when without turning on when i plug in AC adapter. But when i remove the battery and plugged in my AC adapter, the power and capslock lights and the charging lights constantly blinking without turning on.

what should i do?

⟐ Answered November 21, 2024 at 21:41 MST

HP EliteBook 850 Series: My keyboard not working some of the keys,

Wed, 17 Dec 2025 06:46:47 -0700

Whilist typing, I get to a point where my keys stops working, some will be working some would not then maybe you try again some hours later it works for like 3 to 5 minutes then it stops again

⟐ Answered December 17, 2025 at 6:46 MST

HP EliteBook 850 G1: HP laptop sreen issues.

Tue, 01 Aug 2023 03:49:13 -0700

Screen in my laptop is randomly turning "half-transparent" white, what is more intresting nothing frozes at the beggining, after some time white thing spreads on full screen and start frozing image, it also turn color inverted then, it happens mostly when I close or open my laptop, sometimes it disappears when I start moving it, but not always. I tried to wait some time without moving it but that never works.

⟐ Commented August 01, 2023 at 3:49 MST

HP EliteBook 850 G3: Why does my display 'solerize' at odd times?

Sun, 20 Sep 2020 00:03:09 -0700

my display ‘solerizes’ at odd times - to ‘fix’ it - I either close and open the lid or reset the display refresh to another rate but neither is a permanent fix.

⟐ Answer unaccepted September 20, 2020 at 0:03 MST

HP EliteBook 850 G6: My hp elitebook 850 g6 powers on but no display

Wed, 01 Apr 2026 06:10:11 -0700

My laptop turns on but does not display anything. Also has the caps lock led blinking 5 times. I have disconnected and drain residual power by pressing the power button for 30 seconds twice disconnect and connected the display cord from the screen still no display. I keenly a fixing support. Thank you to any support in advance.

⟐ Answered April 01, 2026 at 6:10 MST

HP EliteBook 850 G1: My laptop heats up and shutdown

Tue, 31 Mar 2026 13:18:51 -0700

My HP EliteBook 850G1 is over heating, it starts with HP logo showing and that loading circle spins the fan starts to spin faster but it doesn't boot to windows desktop. But at times it boots like nothing is wrong with it, but during normal use at times it goes blank with fan spinning very fast and shuts down.

I've checked the windows event viewer and found that excessive heat event is causing that, so I opened it checked the heat sink it was clean, I refreshed the thermo paste, cleaned the fan, which wasn't very dirty to began with, I used the thermo paste Maxtor CTG8 it's Thermal Conductivity is 12.8 W/m-k, Temperature Stability: -50C -+ 250C, Specific Gravity: 2.8g/cm3, any idea what's wrong?

⟐ Commented March 31, 2026 at 13:18 MST

HP EliteBook 850 G3: Why is my does my laptop shut off whenever I plug the battery out?

Sat, 14 Feb 2026 21:02:12 -0700

How can I fix a Failed battery?

⟐ Answered February 14, 2026 at 21:02 MST

HP EliteBook 850 G2: HP laptop overheating + BIOS warning “System Fan (90B)” — fan

Tue, 20 Jan 2026 03:08:02 -0700

Hi everyone, My HP laptop is overheating and on every boot I get a BIOS warning that says “System Fan (90B)” (cooling fan not operating correctly / not spinning at expected speed). The fan seems weak and sometimes doesn’t spin properly, so temperatures get high quickly.

⟐ Answer edited January 20, 2026 at 3:08 MST