Hi first question posting here, but no need to go easy on me!
I have an HP EliteBook 840 G1 non touchscreen. The symptoms are that: Repairing or reinstalling windows freezes no matter how i try it. Live Ubuntu that works on any other computer also freezes while trying to load it. The RAM sticks and the harddrive work fine in other computers. I broke off the connector by accident, CN4750 and was using the laptop for a while with no coin battery. According to this schematic I found on here, which I THINK is the correct schematic, pins 2, 3, and 4 should short to ground, and they do....

Hello, there!

The problem with this laptop is that it does not show video at all, even if I connect an external HDMI screen device to its port.
I got it disassembled, and first of all it does have its VDC in (19.81). I checked the 5 inductors having the charger plugged in, and the voltage readings are:

[B]TURNED OFF[/B] (without pressing the power button)
1: 9.07 VDC
2 to 5: 0 VDC
[B]TURNED ON[/B] (after pressing the power button)
1: 9.04 VDC
2: 1.203 VDC
3: 0.813 VDC
4: 3.403 VDC
5: 5.133 VDC

I'm not...

Hi, I have 3 HP 850 G8 here.
I was able to remove the password (mostly by try and error) but it still has the endpoint security problem.
Is there a “manual” or an HowToo what needs to be changed / what I need to look out for in the bin files? For the password removal and the endpoint security thing.
I hope someone can help me 😊
I've attached both dumps from laptop one....

Hi!

I have the same issue. My HP 6570B starts without pressing any button, and the Caps Lock and Num Lock LEDs blink 3 times. The fan runs at maximum speed, but nothing appears on the display. I already tried writing different BIOS files, but the issue remains. I also read the BIOS with a chip programmerfrom a working laptop, saved it, and rewrote it, but the problem persists (the good laptop works fine). The RAM and CPU have both been tested and show no issues.

If someone has found the cause and can help me, please let me know.

Does this laptop have the...

Hi, I need help with main bios and EC backups for HP ZBook 17 G6.
SN: 5CD015H8QH
After a failed update it doesn't boot anymore, just fans spinning endless. Cleaning ME it boots after I powered off 2-3 times and it appears message "HP Sure Start detected corruption in the Intel ME Select Continue to complete full recovery..." but it shuts down after 15-20 seconds and I can't power on from power button anymore, so I suspect also EC bios being corrupted - it suppose to recover ME from it. Analyzing EC bios dump with MEAnalyzer I have a lot of errors, including Error to File...

Hi, I don't even know if the problem is bios related.
It's a HP 250 G6 serial CND8117C44, it died during an update. The caps key is blinking 5 times slow and 3 times fast. Maybe it is a bios problem? I read a backup of the bios with my CH341 interface. I download and extracted bios exe file from HP support and I found 5x .BIN files (and 5x .SIG files) named 084D4 0832D 0832E 08328 and 08445. Which file is correct? I tried to flash every file but the there is no fix. I understand that maybe I need to program the serial number. Any advice?
Thanks in advance! Sorry if this maybe isn't...

HP 15-bs289wm
LA-G121P
CND8280PNG
5 long 3 short on caps lock

I found and extracted the BIOS from HP but its not the same as the one I got out of the programmer. Large portions at the start and end are just FF or 00. I am certain i was using the proper version out of the 4 in the decompressed files. I went to like 42 49 44 to find which version it is. I dunno maybe the old BIOS was corrupt? Im probably just doing it wrong.

Can someone build me a working BIOS and I can check it against what I did?

The Original BIOS and the extracted...

Oops, I tried reading the chip again, I think its correct now....

Please help - motherboard
BRIGHTON-6050A3037501-MB-A01(A1)
Blinking power button,dont power.I see 3 chips,programed 32Mb I now turn on and restart 2 times,no displey.
If someone have 16Mb bin to try...
Old 32Mb chip is in attach and another I have uploaded....

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.
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[B][U]Find by serial number,model number or series[/U][/B]

If you know the laptop serial or model number go to HP support [URL]https://support.hp.com/us-en/drivers/laptops[/URL] .
Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
Operating...

I got the laptop with the issue, that it turns on and Caps lock blinks 5 long and 3 short. I had no VCORE on CPU and the Resistance of the PCH was too low (below 10 Ohm). So i ordered one from aliexpress and installed it (40 Ohm now).
Laptop turns on, it has VCORE but i don't get anything on screen (internal or HDMI). I found out, that the GPU doesn't read the BIOS (oscilloscope). After that i checked the PEGX_RST# and saw that it's not pulled low when i turn it on, just constant 1.8V.
CPU_PLTRST is also not pulled low, constant 1.0V when turned on.
I tried the original BIOS...

Hi all, I have a HP 15-cb028nl (dag75ambad0 rev. d) that turns on but does not charge the battery. The laptop arrived with the super I/O (ITE IT8987E BXA) burned. After replacing the EC, it turns on but does not charge the battery. Below are the voltages on the pins of the bq24738h, with and without the battery inserted:
[TABLE="border: 1, cellpadding: 1, width: 500"]
[TR]
[TD][B]WITHOUT BATTERY[/B][/TD]
[TD][B]WITH BATTERY[/B][/TD]
[/TR]
[TR]
[TD]PIN1 (ACN)= 19.76 V[/TD]
[TD]PIN1 (ACN)= 19.76 V[/TD]
...

Hello,

I have a HP ProBook 650 G4 with a continuously blinking amber light, no post issue. The motherboard version is CHROMIA-6050A2930001-MB-A01(A1), no schematics or boardview is available for it.

What I have done so far is the following: There is no short anywhere on the board, and all high and low MOSFETs check out fine (I checked resistances across G-S-D as well as diodes). BIOS and EC both get 3.3V, I tried reflashing both with fixed versions from hoaca, no change.

I measured all coil voltages, see attached image for values, some get voltages, some...

Hi guys, I have this notebook that does not turn on. HP la-h329p
When I connect the power supply the white light does not turn on but it does not generate the 3v and 5v.
I find the voltage in the P2 pin so the first 3 mosfets are working, I also changed the charger and the problem persists.
On the battery connector I have about 2.8V on +BATT but on SDA and SCL I have 0V.
I checked and the 3v and 5v coils are not shorted to ground.
What can I try?​

Hannstar manufacture the board ,but the design is by Compal

[B]Compal[/B]: found in HP, Dell, Acer, Toshiba, Lenovo… Model number is "LA-xxxx[I]P[/I]" ([I]P[/I] is optional), the older, the lower the number is. Like LA-4082P from 2007 or LA-E541P from 2017.

[B]Beginner's guidelines[/B]
[url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/79043-beginner-s-guidelines[/url]
[B]1.1.3 Motherboard model number​[/B]Hannstar manufacture the board ,but the design is by...

try post #3
[url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/3491461-hello-all-need-a-bios-for-hp-15-dw2013ny#post3491987[/url]

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

you need an SPI programmer...here is a video for example..[url]https://www.youtube.com/watch...

Hello,

I am currently working on recovering my HP Laptop (Model: 17-cn0023dx) after a BIOS corruption issue. The laptop is stuck in a no-boot state, and the Caps Lock light is blinking with a 3.2 code (3 long, 2 short), which according to HP documentation indicates a BIOS corruption failure.

I have prepared a USB stick using the HP Cloud Recovery Tool, but I confirmed that it does not include a BIOS recovery image for Crisis Recovery. I also attempted to extract the BIOS file from the spXXXXX BIOS update package provided on the HP Support site, but that update only provides...

Hi,
I also just got one HP 4540s with similar problem. After plugging in the power adapter power led blinks few times and the fan spins for a second and after that full shutdown fan stops and all lights go dark. I don't have the battery to test it.
Pressing the power button turns the fan on and few blinks from power led and after a second full shut down by itself.
After disassembly mainboard behaves the same with no cpu, ram, wlan or anything connected to it except power adapter, tried with more adapters, same story, they all work on other laptops.
Power button works fine,...

Hi from Norway

Been working with computers for close to 30 years, next year it's 30 years since I buildt my first computer. Now I build a new computer like every 2-3 years. I've had atari, c64, amiga 500 and 1000. First computer was a 386 then a 486 with turbo button. I also tested every generation of a CPU that has come out for years. I work for one of Europes largest consultant companies and have earlier worked for companies like HP where I was in charge of teaching technicians how to repair laptops, desktops and servers.

Hello everyone firstly i'm thankfully if someone can help me if not i'm very stupid i have use ch341-a to flash my bios when i was deleted chip and loose my original backup, then the problem comes my laptop won't start only red light blinking without boot and without screen and fans but electricity is there in light close to charger. Chip was not damaged cause via application works when i want to update. Probleme is next i even tryed to download official bios from hp and put there informations of my serials numbers which is : 5CD938GPG1 (with HxD ). My model is with chip name winbond 25Q128JVSQ...

Hello guys,

As per title says I have a Envy 15-FH0501sa , Ryzen 5, 16 Gb version.
Motherboard number is JPB51 LA-M798P rev.1.0
SN CND3362R3S

The laptop is getting power and funs stop spinning after few swcconds. It was liquid damaged so we get it to turn on. However 3 long and 2 shor Caps lock lights showing. Power button turns the laptop on but not off.Battery is charging.
Please help and advice. I attachet the bios dumb in case the bios is the problem.

Many thanks.​...

SMDFlea...

I got a hp omen that came in for a no power repair. I specialize in mobile phones repairs but also do laptop to assist local shops that needs microsoldering jobs. This hp omen is missing the 3v on bios and also the main rail 3.3v is missing. Should I replace the power management chip? Where is the bios 3v generated...

[B]HP Notebook 15-da1030tu
part number epw50 la-g07fp rev:1.0

laptop came from some repair shop and he delete the original bios

try to flash bios from vinafix but no luck { no power with vinafix}

than i download bios from HP support site an exe file and
after extract i got 3 different 16mb & 3 8 mb bios with 3 different BID NUMBER [/B]

[B][COLOR="Navy"]but we dont know the right BID NUMBER[/COLOR][/B]

[B]So i try 1 by 1 all of 3 extracted bios
i got boot up (power on) with all of 3...