iFixit - Answers With Device "HP EliteBook 850 G2"

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 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 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

HP EliteBook 850 G2: My screen is moving in zigzag

Sat, 13 Apr 2024 03:08:01 -0700

I can't see my screen it's moving in zigzags format.