driver e bios update for Hp 15-n249sl (f.42 bios)

[GennaroMastro]

Hi,

I have an HP 15-N249SL laptop with F.42 BIOS.

I'd like to enable TPM in the BIOS, but I can't find this option. Is it possible to upgrade the BIOS to a newer version that might include a TPM entry? My goal is to upgrade my PC to Windows 11.

The problem is that on the HP website, I haven't been able to find any drivers or BIOS updates for my specific laptop. When I enter my serial number, HP's website mistakenly identifies my PC as an HP 14-dq0000.

Thanks in advance for your help.

Gennaro

[Paul_Tikkanen · Accepted solution]

Hi, Gennaro:

Updating the BIOS will not add TPM functionality to your notebook.

TPM is a hardware device that is an integral part of the motherboard.

TPM 2.0 security chips were not installed in HP consumer class notebooks until 2016 at the earliest.

HP has retired support for your notebook which is why you can't find any drivers for it.

Let's say for arguments sake that your notebook has a TPM 2.0 security device.

Your notebook still would not meet Microsoft's minimum W11 hardware requirements because the Intel Core i5-4200U processor it has falls 4 generations short of Microsoft's W11 Intel processor requirements of an 8th generation core or newer processor.

The reason HP shows your notebook's serial number as a 14-dq0000 is because of the way they issue serial numbers.

Some get duplicated every 10 years because certain things like the week and year of manufacture characters are the same.

Only one character of the serial number is used for the year -- the 4th one which would be a 0 - 9.

Then the 5th and 6th are the week of manufacture (01 - 52).

If you enter your notebook's serial number in the HP part surfer website at the link below it should provide two model numbers and have you select one.

HP PartSurfer

Now, as for your mission to upgrade from W10 > W11. 

You can still do it without a BIOS update, an 8th gen core processor or a TPM security device, but you have to use a workaround to do so that bypasses the W11 hardware checks.

If you are interested in installing W11 24H2 via an in-place upgrade on your PC as is, watch this video, which is the easiest way to do it in my opinion, and I have tried many different ways to do this during the last 3 years.

How to Install Windows 11 on Unsupported PC in 2025 (New Easiest Method, No CMD)

Download the W24H2 ISO file and use that (3rd option).

Download Windows 11

You can download the free 7-Zip file utility from the link below. The top line is for 64 bit.

7-Zip

You'll have to repeat this or a similar procedure each October when Microsoft rolls out the new builds because a PC that does not meet Microsoft's minimum W11 hardware requirements will never automatically get the update to the next build.

Other than that, your PC will continue to get the monthly cumulative and other updates.

That's only a minor inconvenience to have continued OS support beyond October of 2025.

If things don't work right on W11, you have 10 days to easily go back to W10 as long as you don't delete the W1 upgrade files or the Windows.old folder.

How to Go Back to Windows 10 from Windows 11 (Tutorial)

If you need drivers for your notebook  you can download them from this reputable 3rd party website at the link below.

HP Pavilion 15-n249sl drivers for Windows 10 64-bit

They show a BIOS version F.67 but here is a link to a newer version (F.72) for which I have provided the info and exe file links.

This was the last BIOS update HP released for the model series.

https://ftp.hp.com/pub/softpaq/sp86501-87000/sp86738.html

https://ftp.hp.com/pub/softpaq/sp86501-87000/sp86738.exe 

[GennaroMastro]

Thank you Paul for your invaluable and detailed support regarding all my dubts and concerns in my post.

I will definitely follow your excellent advice,

King regards

Gennaro

[Paul_Tikkanen]

You're very welcome, Gennaro.

I used that method to upgrade my HP 350 G1 notebook which also has an intel 4th gen core processor, but is the lower performing i3-4005U, and no TPM security device, and it works fine.

Cheers,

Paul

[GennaroMastro]

Hi Paul,

following your instructions, I've updated the BIOS to version F.72.

Tomorrow I'll update my HP n249sl PC to Windows 11 and let you know how it goes.

Thanks again for all the valuable information.

Gennaro

[Paul_Tikkanen]

You're very welcome, Gennaro.

Looking forward to reading about the results.

Cheers,

Paul