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Hp zbook caps lock blinking 4 times

Hp Zbook 15 g1 with i7 4900mq
Microsoft Windows 10 (64-bit)

Hi, I don't have a discrete video card in my laptop zbook gq and I turned of the hybrid graphics in bios bio then the laptop can not start and caps lock blinking 4 times what means that the video graphics is not ok, it happened right after I turned of the hybrid graphics in bios and maybe someone knows how to reset bios or something like that to return the settings.

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Hp zbook caps lock blinking 4 times


Caps/Num lock lights = 4 blinks - Graphics controller error

LED blinks 4 times


Graphics controller failure.

Test the Main-Board with the minimum hardware & reseat all connections and graphics cards.

If the issue persists, send out Main-Board and if applicable graphics card for Mobile Workstations.


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Can you give the SKU: please.


Hopefully one of these documents will cover (and solve) your problem...

Turn off the computer, and then connect the power cord.
Press and hold the Windows key and the B key at the same time, and then press and hold the power button for 2 to 3 seconds.
Release the Power button but continue pressing the Windows and B keys. You might hear a series of beeps.
The HP BIOS Update screen displays and the recovery begins automatically. Follow any on-screen prompts to continue the startup to complete the recovery.
HP BIOS Update recovery in progress

If the HP BIOS Update screen does not display, repeat the previous steps but press the Windows key and the V key. If the screen still does not display, your computer might not support the feature or there is a hard drive issue. Continue to the next step to install a BIOS recovery file from the HP website.
If the Power light turns off, the Power button was held too long. Repeat the previous steps, making sure to hold the button for only 2 to 3 seconds.

Little Boy Blue, come blow your horn.

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