Black screen after Bios update

[Danil128]

Windows update downloaded the new version of bios for my HP 15-bs557ur, I restart pc and installed it and then PC restarted with black screen and only bootloop every minute. I have tried all possible instructions from this community and nothing helped. I tried:
win+b turn on
win+v turn on
Tried recomendations to pull out bios battery.(tried every instruction with this)
Tried bios recovery usb
In all situations nothing change- only light of charge and On light... and loop reboot every minute. Nothing worked! I almost despaired
BUT I FOUND SOLUTION!
I will also put it here, hope I will help many people.
Solution: Take usb (I advise old one, with usb 2.0 for 4~gb) and go to driver page for your PC. Then go to BIOS and you will see only one, newest version of it. Press at the left side on triangle to see details, and in the bottom you will see Previous versions. Open it. And try to download version that was published year or more before. Download it and make recovery flash usb with this old version of bios. And then just plug it in to your  broken PC(it must be OFF), press win+b (and keep to press it) and press for one second Power button. Keep press win+b until you see that screen shows bios recovery process.
Hope I will help you!

[Danil128 · Accepted solution]

Take usb (I advise old one, with usb 2.0 for 4~gb) and go to driver page for your PC. Then go to BIOS and you will see only one, newest version of it. Press at the left side on triangle to see details, and in the bottom you will see Previous versions. Open it. And try to download version that was published year or more before. Download it and make recovery flash usb with this old version of bios. And then just plug it in to your  broken PC(it must be OFF), press win+b (and keep to press it) and press for one second Power button. Keep press win+b until you see that screen shows bios recovery process.
Hope I will help you! 

[CloudX99]

I will give this a shot and see if it's worth trying 

[dstuart]

I have a HP 15 BS-158sa  laptop and Bios upgrade failed after Bios update 71 (loads of people have same problem with this Bios)  Tried holding down win key & B, also win key and V  But this fails to work and my laptop boots on with black screen and keeps rebooting.  Any body got another solution?

[Etxola]

Same problem with 15-bs034ns and F71 revA

The recovery flash usb has not worked for me

[dstuart]

USB Recovery fails to work, had to remove motherboard from laptop and then re-program Bios using software & programmer clip that attaches on top of bios chip.  Luckily I'm an I.T Engineer and repair laptops, computers etc....   for a living.

This is first time ever that a HP laptop Bios update has failed, usually HP computers Bios works perfectly all the time.

All fixed now, but not going to update Bios again on this HP 15-BS158sa (Intel i5 laptop)