Hello everyone! I have HP ProBook 640 G8 laptop with long start. Can anyone help me with bios clear me please.As I know from ME analyzer that the version of me region is 15.0.41 but I can't clear it by myself, I don't know why but in CSME system tool it shows error
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Re: Hp probook 640 g8 bios clear ME Firmware
Please post the laptop serial number - https://www.badcaps.net/forum/showthread.php?t=103570
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Re: Hp probook 640 g8 bios clear ME Firmware
Sn: 5cd212fx6gComment
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Hi, my HP Probook 640 G8 shows black screen. I wrote some bios dump and works but fails again.
Can you help me?
Attach original BIOS.
Motherboard DAX8QEMB8D0 REV.A
S/N: 5cd1520lnr
Thanks in advance!Comment
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Hello all, I have in a job lot a HP ProBook 640 G8, one of the bios chips is missing and I am not
sure the chip that's fitted is even the original chip looks like its been replaced.
SN, 5CD1360KBZ
MB, DAOX8QMB8E0 REV E
Is there any hope for this laptop? I have tried every set of chips I can find with no luck.
Anyone have a good working set they could share please.
Thanks.Comment
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What are the silkscreen markings for both, are there numbers like U365 or writing such as Bios1 EC_Bios .Backup the chip thats there and open it with HxD, download the bios from post 1 and open that as well, scroll through each one, if yours is a close match then it`s the main bios, but not necessarily the right one. Search for the serial number in the bios with HxD, a text search,and for the Text encoding option select Unicode ,if the serial number is found thats good. The main bios at post 1 has 3 chips in the VSCC table, see the picture below
https://chromium.googlesource.com/ch...e/flashchips.hComment
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Thank SMDFlea for trying to help on this one, It turns out the bios chip I have is the original.
I have got this info from the bin file, the mac looks a little odd to me.
Product Name : HP ProBook 640 G8 Notebook PC
Serial Number : 5CD1360K8Z
Product Configuration ID : 2Q013AV
BuildID : 20WWISDT601#SAK8#DAK8
FeatureByte : 3X476J6S6b7B7H7M7Q7W7m7saBaEapaqauawbUbhcAdUdpdqfAfPguhKhkjhk8mEn7nVpD.r7
System Board CT Number : PKXXL058JFM0RN
MAC Address : 88-88-88-88-87-88
I think the bios file at post 1 is a EC bios file and the one I have from the laptop is the Main bios.
Any more help would be really good as not sure what now, do I try both files together in the laptop see if it displays anything?
Thanks so much mate. I added my main bios may help.
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Hello SMDFlea thank you so much for your help, sorry I have been away for a few days, tested these files
all I get is an orange flashing led near the power supply, no post if anyone has any ideas that would be great thanks.
thanks again mate .Comment
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I'm in this exact pickle too, did you get anywhere?Comment
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No mate, it's still sitting here in bits may need another board or sell it for scraps.
There are not many sets of bios files online for this model, DAOX8QMB8E0 REV E
and I tested all I could find. didn't think to try a set for a another board model maybe I give this a go.
if you should fix please share.Comment
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Just for completion, it became a right pickle which I’ve left for dead. I think I must have damaged a via or something as it was difficult to get the heat into the bios chip and I know I fried the wifi card next to, so a buried via or something on the back of the board could have easily been destroyed.
I Frankensteined a new laptop from its parts for about £100, and haven’t looked back. It was fun to play, no success this time.
Not jaded, just time to move on.Comment
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Hp Probook 450 G7 s# SCD0348W35 had a locked BIOS. Bought BIOS and EC chips off Ebay that were supposed to match this machine - the 450 G7. Flashed in the BIOS on chip i bought using a CH341. BIOS unlocked next boot. Some error to contact HP. Entered BIOS and reset to system defaults and rebooted. Machine worked fine but every cold boot the contact HP message popped and everything else worked as fine. Assumed the error was from EC chip not matching BIOS that i just flashed in. So i flashed in the EC that was supposed to match from the EBay chip i bought and instant brick.
Ive got...07-08-2025, 09:24 PM -
i recently got a new motherboard for my probook g1 650 but the bios was corrupted and unusable so i removed the bios chip from my old motherboard and transplanted it to the new board with the ati hd8750 dgpu. the dgpu does not function as the firmware is missing the video bios for it.
how do i fix this? the pc is running the latest L78 1.50 firmware. -
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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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... -
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