Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

[martin86]

Hello,

I have an HP Pavilion Notebook 13-an1900ng with the mainboard DAG7DCMB8D0.
The notebook had a CMOS checksum 502 error when booting.
I have created a BIOS backup with CH341A. Then the original BIOS (sp135626.exe) downloaded from the HP, extracted the bin file flashes the Chip (GD25Q128).

After the flash, the Notebook show only Power LED light, no Screen.

Can someone help me here. Can the BIN file be imported just like that or does it have to be adjusted beforehand?

Original BIOS File attached.

Thanks.

[peste]

Re: Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

Hello,

I have an HP Pavilion Notebook 13-an1900ng with the mainboard DAG7DCMB8D0.
The notebook had a CMOS checksum 502 error when booting.
I have created a BIOS backup with CH341A. Then the original BIOS (sp135626.exe) downloaded from the HP, extracted the bin file flashes the Chip (GD25Q128).

After the flash, the Notebook show only Power LED light, no Screen.

Can someone help me here. Can the BIN file be imported just like that or does it have to be adjusted beforehand?

Original BIOS File attached.

Thanks.

bios extracted from the HP site update
DMI 400000 - 40105F
KEYWIN 404000 - 40403F

[martin86]

Re: Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

Hi, i have the file (086B5.bin) extracted from the HP site and flashed this. After the flashed the Notebook show only Power LED, and not Screen. Any ideas I used the AS Programmer. Chip was detected.

[martin86]

Re: Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

Hi,

i flashes now the ROM File from the Backup. After a Remove the SSD the Notebooks always Boot correct. When the SSD (nvme) is installed, the Notebook only show a Blank screen any ideas?

Thanks.

[SMDFlea]

Re: Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

If the CMOS battery voltage is ok try changing different settings in the bios, disable secure boot, clear secure boot keys, enable legacy boot.

[martin86]

Re: Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

hi, on Board there is no CMOS battery. I have never seen before. In the Maintenance guide theres is no Info about the battery. I repair PC over 20 years. Ist there a new methode about the battery. There is no cable that the battery is externaly. Any Ideas. With google search (DAG7DCMB8D0) you found a picture of front and back. therse is no battery or connector for that.

[A1yn88]

BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

Hello.
I have an HP 13-an1900ng, Prod ID 7VX14EA#ABD, SN: 5CD9476RYY.
BIOS got corrupted after a Windows update. Can anybody repair it for me?

[peste]

Re: BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

Hello.
I have an HP 13-an1900ng, Prod ID 7VX14EA#ABD, SN: 5CD9476RYY.
BIOS got corrupted after a Windows update. Can anybody repair it for me?

if you read this thread from the beginning, there was no need to write here.. you have everything you need for post #2...

[A1yn88]

Re: Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

Not working for me, black screen. The original one is give me an image but is an error. The bios is corrupted...

[Vesko356]

Re: BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

if you read this thread from the beginning, there was no need to write here.. you have everything you need for post #2...

That's right and that's where the problem is - he didn't read anything, and he wants someone to prepare for him everything ready-made, he didn't even bother to search if there was a similar topic and just created a new one, so I had to merge it with the current one.

[peste]

Re: Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

Not working for me, black screen. The original one is give me an image but is an error. The bios is corrupted...

try this then..

[A1yn88]

Re: Need Help BIOS DAG7DCMB8D0 HP Pavilion 13-an1900ng

It works.
Thank you.