Booting up

[Muzzy48]

 Can someone please assist me I got notification yesterday from HP solutions that I had a bios update which I downloaded from the solution site I followed all instructions it then said and now my laptop won’t work I can hear the fan come on for a few seconds each time I turn it on but then it just turns off. I have looked up various help chats and have tried the following with no joy press windows and B at the same time whilst powering up and continually pressing f11. My model of laptop does not have a removal battery.  Any assistance would be greatly appreciated. As I am out of my country on work and desperately need it. I have tried HP but my warranty ran out 3 weeks ago. 

[Muzzy48]

Sorry I missed out my laptop is a HP notebook 15 da0596sa

[Lil_Boy_Blue]

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

https://support.hp.com/ca-en/document/c00042629

https://support.hp.com/us-en/document/c02693833

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.

Hi
First:- Turn off the computer, press and hold the PWR button for 4 seconds.

Then - Leave only keyboard and mouse connected, disconnect all externally connected
devices such as Docking Station, USB storage devices, displays, and printers.
Unplug the AC adapter from the computer.

Next - Press and Hold the Power button for 15 seconds to Hard Reset.
Rinse and Repeat; Re-Connect the AC adapter.

NOW begin checking/testing/proving the Hardware is fit for purpose.
Power on your PC, press ESC (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).
AND/OR
HOW DO I USE DIAGNOSTICS?

HP PC Hardware Diagnostics Windows is a Windows-based utility that allows you to run diagnostic tests to determine if the computer hardware is functioning properly. The tool runs within the Windows operating system in order to diagnose hardware failures. HP PC Hardware Diagnostics Windows comes pre-installed on new HP computers, but if not on yours, download here:-
https://www8.hp.com/us/en/campaigns/hpsupportassistant/pc-diags.html