Finally I dared to update the Bios (with a full loaded battery - that took me some months to receive - and the AC in place!!).
I downloaded the Bios update from the Dell Driver page, and after the download I clicked on install.
Then I closed all other programs and clicked ok.
Quickly it started to shot the laptop down, and now it shows a blue screen with message "Closing down" - in spanish.
I know it's dangerous to loose power while updating the Bios, but I thought the process was quick like some secs.
If the bluescreen persists, should I hard reboot?
I wanted to add a photo of the screen, but looks like it's not allowed anymore.
So basically its a blue creen saying "Apagando equipo"
Seems like frozen.
A bit scary!
Dell Inspiron 14 3437
Against all odds it finally restarted. This time I was happy to hear the loud buzzer that announces the failing cmos batterie ;-)
Nothing is updated.
I checked my Bios version, it is still the same (A02)
Maybe I should avoid a new stress and just let it like it is. Better an old Bios than a broken motherboard.
Make sure you buy a new coin cell cmos battery and install it according to your manual. It's cheap, only $2 or so.
That was a good idea not to force a bios update. As long as the computer is running OK don't update the bios unless told to by a support tech at Dell..
Thank you Mary,
In fact, I had looked at the manual that explains how to change the CMOS battery and it's horrendous, it needs to quit almost every piece of the laptop. Congratulations to the engineers who designed this machine.
I don't feel able to do that.
And my tech guy takes a fortune for the smallest task and always does more than asked, to justify the price. Regarding the Bios update, yes there are quite a few things that are not working on that computer, like it freezes all the time, windows start button not working nor cortana, no keyboard light, unresponsiveness of touchpad and keyboard, stand by mode not working (instead it restarts), when plugged on AC charger it restarts too, and some other things, besides being slow in general.
So I put a lot of energy in getting this new battery delivered (the big one) and now that I have it the Bios update still doesn't work. But looks like it's just not possible or it will break completely.