[BIOS REQUEST] HP Pavilion 15-BS521TU - Black screen after update BIOS to F.73

[AgustinLorenzo]

Hi boys,

This is my first post in BADCAPS and I hope I don't make any mistakes and give the correct explanations.

Yesterday a friend brought me this laptop home to expand the RAM to 16GB of RAM and update it since it had been abandoned recently.

Everything was fine, until I made the mistake of updating the BIOS to version F.73 from version F.24, since after according to HP "updating correctly" the laptop never worked again, leaving the screen black but the fan is working and the light of M.2 is on.

After having carried out all the frequent internet steps (Win + B, USB recovery) we have not achieved anything, arriving "I think" to the conclusion that for some reason the BIOS was corrupted or that version published by HP has some error.

I have fixed many software/hardware problems but never with this one, that is why I have already done the following:

- Buy a USB programmer in order to reprogram the BIOS (https://www.amazon.es/gp/product/B07RKXSMKH)
- Check the model of my BIOS chipset, Winbond brand and model 25Q64JVSIQ
- Check motherboard model: CSL50/CSL52 LA-E791P Rev:2.0 and date: 2017-07-18
- Find out BID of the motherboard which is 08328

Things I still need to do:

- Extract DUMP from my current BIOS, I am waiting for AMAZON to deliver my package.

If you can help me, I would be delighted.

If I have made a mistake, let me know and I will try to correct it immediately.

Regards, Agustin

[qayyum786]

Re: [BIOS REQUEST] HP Pavilion 15-BS521TU - Black screen after update BIOS to F.73

Hi boys,

This is my first post in BADCAPS and I hope I don't make any mistakes and give the correct explanations.

Yesterday a friend brought me this laptop home to expand the RAM to 16GB of RAM and update it since it had been abandoned recently.

Everything was fine, until I made the mistake of updating the BIOS to version F.73 from version F.24, since after according to HP "updating correctly" the laptop never worked again, leaving the screen black but the fan is working and the light of M.2 is on.

After having carried out all the frequent internet steps (Win + B, USB recovery) we have not achieved anything, arriving "I think" to the conclusion that for some reason the BIOS was corrupted or that version published by HP has some error.

I have fixed many software/hardware problems but never with this one, that is why I have already done the following:

- Buy a USB programmer in order to reprogram the BIOS (https://www.amazon.es/gp/product/B07RKXSMKH)
- Check the model of my BIOS chipset, Winbond brand and model 25Q64JVSIQ
- Check motherboard model: CSL50/CSL52 LA-E791P Rev:2.0 and date: 2017-07-18
- Find out BID of the motherboard which is 08328

Things I still need to do:

- Extract DUMP from my current BIOS, I am waiting for AMAZON to deliver my package.

If you can help me, I would be delighted.

If I have made a mistake, let me know and I will try to correct it immediately.

Regards, Agustin

MAKE SURE THIS BEFORE DEMANDING ANY BIOS FILE FOR NO POWER, NO DISPLAY, OR PASSWORD RELATED

BRAND & MODEL NUMBER :-

SERIAL NUMBER / SERVICE TAG:-

MOTHERBOARD PART NO:-

COMPLETE BIOS BACKUP
IF 1 OR MORE THAN 1 BIOS FILE ATTACHE ALL

PROBLEM/ISSUE :-

IF PASSWORD THAN PASSWORD IMAGE:-

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103570

[AgustinLorenzo]

Re: [BIOS REQUEST] HP Pavilion 15-BS521TU - Black screen after update BIOS to F.73

MAKE SURE THIS BEFORE DEMANDING ANY BIOS FILE FOR NO POWER, NO DISPLAY, OR PASSWORD RELATED

BRAND & MODEL NUMBER :-

SERIAL NUMBER / SERVICE TAG:-

MOTHERBOARD PART NO:-

COMPLETE BIOS BACKUP
IF 1 OR MORE THAN 1 BIOS FILE ATTACHE ALL

PROBLEM/ISSUE :-

IF PASSWORD THAN PASSWORD IMAGE:-

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103570

Hi @qayyum786,

Sorry, about that i am new in the forum, i share the detail specified:

BRAND & MODEL NUMBER: HP Pavilion 15-BS521TU
SERIAL NUMBER / SERVICE TAG: CND7440RSK
MOTHERBOARD PART NO: CSL50/CSL52 LA-E791P Rev:2.0 and date: 2017-07-18
COMPLETE BIOS BACKUP: At the moment, i don't have a backup file, buy I buy a programmer USB to extract them.
PROBLEM/ISSUE: It does not show video on the screen after bios update but it does turn on all the LEDs (M.2, battery charge and device status)

Thanks.

Regards, Agustin

[qayyum786]

Re: [BIOS REQUEST] HP Pavilion 15-BS521TU - Black screen after update BIOS to F.73

Hi @qayyum786,

Sorry, about that i am new in the forum, i share the detail specified:

BRAND & MODEL NUMBER: HP Pavilion 15-BS521TU
SERIAL NUMBER / SERVICE TAG: CND7440RSK
MOTHERBOARD PART NO: CSL50/CSL52 LA-E791P Rev:2.0 and date: 2017-07-18
COMPLETE BIOS BACKUP: At the moment, i don't have a backup file, buy I buy a programmer USB to extract them.
PROBLEM/ISSUE: It does not show video on the screen after bios update but it does turn on all the LEDs (M.2, battery charge and device status)

Thanks.

Regards, Agustin

so we are waiting for the programmer i guess you buy a ch431
even if i give you the bios file (as per your bid you have given above) it will be meaningless until and unless you don't get a programmer in your hand to program the bios in your laptop

just ping us here when you will get a programmer some one will send a working bios file for you

[AgustinLorenzo]

Re: [BIOS REQUEST] HP Pavilion 15-BS521TU - Black screen after update BIOS to F.73

so we are waiting for the programmer i guess you buy a ch431
even if i give you the bios file (as per your bid you have given above) it will be meaningless until and unless you don't get a programmer in your hand to program the bios in your laptop

just ping us here when you will get a programmer some one will send a working bios file for you

Hi @qayum786

My BIOS chip is Winbond 25Q64JVSIQ (I saw that it was read/write compatible with my chip) and I buy a CH341A with clip for SOIC8 SOP8 (to avoid desoldering/soldering) in Amazon (It should arrive in a few hours).

I will notify you to have the programmed and the backup of the corrupt BIOS

Regards, Agustin

[AgustinLorenzo]

Re: [BIOS REQUEST] HP Pavilion 15-BS521TU - Black screen after update BIOS to F.73

Hi boys,

After few hours..i get a backup of my actual BIOS ROM, the latest BIOS RAM flashed is F.73.

I used to extract my current BIOS "NeoProgrammer V2.2.0.10" which I found on this forum.

Regard, Agustin

[Vesko356]

Re: [BIOS REQUEST] HP Pavilion 15-BS521TU - Black screen after update BIOS to F.73

Hi boys,

After few hours..i get a backup of my actual BIOS ROM, the latest BIOS RAM flashed is F.73.

I used to extract my current BIOS "NeoProgrammer V2.2.0.10" which I found on this forum.

Regard, Agustin

BIOS guides, methods, resources and tools
https://www.badcaps.net/forum/showthread.php?t=103526

6. Finding bios update packages
6.1.8 HP
See:
[Guide] How to extract ready for programming dump from HP update executable file
https://www.badcaps.net/forum/showthread.php?t=121948

[Guide] How to find the right HP bios version to flash
https://www.badcaps.net/forum/showth...51#post1261151

When you`ve found and extracted the right bios using the guides above you can add the DMI (serial number,featurebyte etc) and Windows key to the new bios using following offsets

DMI and Windows key: 210000 - 21103F
.