Hi i've laptop hp 15
asl50 la-c921p
this old bios and it gives black screen
thanks
asl50 la-c921p
this old bios and it gives black screen
thanks
-
-
Re: Hp 15 la-c921p
Hi there! I have same problem. maybe it is videochip? but its comes with cpu together...
or if its a bios, we should find a working sample with new version and grab it from the chip, right? have you found one?Comment
-
Re: Hp 15 la-c921p
so, i've solved the problem.
you should use standard hp's application for BIOS upgrade, and choose there an option - save BIOS (for advanced users). then, need a blank flash drive with fat32. copy all files with names *.bin and *.s12 to the flash drive, root. then put flashdrive in usb of broken HP laptop.
put away adapter and battery. press on the keyboard windows+B, hold, plug in the charger, and then, keep pressing all these buttons, press Power. after it turns on - release buttons.
bios will upgrade.Comment
-
Re: Hp 15 la-c921p
Thanks for sharing this information. I am sure it will be valuable to HP users.
So I am understanding that the Bios battery is what upgrades the bios if both battery and adapter is disconnected.Comment
-
Re: Hp 15 la-c921p
lab10 how did you see SAVE bios for asdvanced user if laptop is with black screen ? donwloading update from hp site , simple gives me the insydeflash.exe , extracting it , there is the crisis recovery folder , and some bin files . wich files did you had , becaseu outside crisis folder there are around 4 bins , and insyde the recovery folder there are many files.Comment
-
Re: Hp 15 la-c921p
the insydeflash create the penitself , nice
Comment
-
Re: Hp 15 la-c921p
Hp 15 la-c921pComment
-
Re: Hp 15 la-c921p
thanksComment
-
Re: Hp 15 la-c921p
thanksSSSSSSSSComment
-
Re: Hp 15 la-c921p
try this bios orignal backupComment
-
Re: Hp 15 la-c921p
thank uComment
-
Re: Hp 15 la-c921p
thaaaaaanxComment
-
Re: Hp 15 la-c921p
thanksssssssssComment
-
Re: Hp 15 la-c921p
Hello, I need bios Sio KB9022 Q
Thank all!!!!Comment
-
Re: Hp 15 la-c921p
ThanksssssssssssssssssComment
-
Re: Hp 15 la-c921p
Hello, I need bios Sio KB9022 QComment
-
Re: Hp 15 la-c921p
thanksssssssssssssssssComment
-
Hello everyone,
I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
🧩 Initial Issue- Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
- External display (HDMI) shows
07-24-2025, 02:17 PM -
First of all thanks to all of our members who have posted previously all methods posted here.
Please leave a comment if you find something new,or have anything else to add.
-----------------------------------------------------------------------------------------
Find by serial number,model number or series
If you know the laptop serial or model number go to HP support https://support.hp.com/us-en/drivers/laptops .
Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
Operating system and OS version.If... -
Hi, my laptop wont boot at all
With original bios no POST, only LED lights
With alternative BIOS from model TP500LN (flashed via programmer) the notebook works again
Some issues
A- with bios from 500LN, it won't update from bios of model 500LA (from 500LN v203 to 500LA v300)
B- If updated from 500LN version 203 to 300, the battery stops being recognized
Things I tried
1- Update / clear ME: Took the non working bios, made a backup, and did this: https://www.badcaps.net/forum/troubl...theory/trouble... -
Hello, I have an old Dell G3 3579 (ST: 2WQ7LP2-8FC8) with a newer 8FC8 BIOS password. I have successfully attached to the flash chip (W25Q128JVSQ) on the motherboard with a CH341A programmer and made several modifications using Intel FIT (e.g., allow software SPI write) without bricking. I was also able to boot to a modified GRUB shell where I attempted to edit many BIOS security related options like BIOS Guard/Lock, Flash Signature Override, ME FW Image Re-Flash, etc.
Unfortunately, some of these modifications like to Intel BIOS Guard failed because it is fused into the PCH. Also,... -
Hello,
I have a Lenovo Thinkbook 15 G2 ITL i5 Laptop (serial number: MP2BFZEF) that when I turn it on, the led on the power button lights up for 5 seconds, then goes out. There's no display and nothing happens.
So I thought it was a Bios problem.
I found 3 bios chips on the board, which I read with a bios programmer: two XMC model bios chips and a Winbond model bios chip. Each XMC model bios chip has two partitions named XM25QH128A [3.3V] and XT25F128A [3.3V]. And the Winbond model bios chip has three partitions named W25Q80BL 3.3V, W25Q80xV 3.3V and W25Q80DV 3.3V....
Comment