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Unlock BIOS HP 450 G5
DA0X8CMB6E0 Rev E
S/N 5CD812DXHC
ProdID 3GH65ET#ABF
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Hi Could You help me with my Bios file. After power on i have black screen and 5 beeps that shows that Bios is corrupted
HP Probook 450 G5
SN: 5CD8490HMGComment
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hi tryComment
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I have hp ProBook 450 G5 , sn: 5CD8416KVJ , after update no power , pls repair. tnxComment
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Hi, I have a hp probook 450 g5 i5 8th.
Initially when I plugged in the power the notebook turns on by itself and after a few seconds the fan, I noticed that the kbc nuvoton was overheating and I ordered a new one from china.
now after changing the new kbc, when I plug it in the screen flashes and when I flash various bios it almost always changes behavior.
Important thing, when I plug in the power, the blue light appears for a second and then goes off, the battery is charged.
I attach my original dump to cleanComment
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https://www.badcaps.net/donateComment
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Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:
>>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<
Every donation made will go towards server fees and maintenance costs.Comment
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Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:
>>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<
Every donation made will go towards server fees and maintenance costs.Comment
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it's all soldered well, go over them one by one.
I bought the chip on aliexpress asking to program it for the card in question.
Has the chip been reprogrammed? or if it reprograms itself with the 16mb bios file
There is a difference between one chip and another, with the old one I tried to reprogram some bios but it didn't do anything, only the fan at maximum, this one instead tries to start.Comment
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So, I tried to put a VGA cable but nothing, then out of curiosity I put a USB stick and the result is excellent, it started with errors though, is it possible to clean the bios file? so that I load my original?Comment
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Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:
>>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<
Every donation made will go towards server fees and maintenance costs.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 -
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 -
Hello everyone,
I recently bought a non-working Asus Zenbook Pro Duo OLED UX8402ZA that was listed for parts only. The seller mentioned that it had no display output but that the charging lights worked.
When the laptop arrived (without a charger and SSD), I connected a charger and confirmed with a multimeter that it was charging the battery. However, when I tried to power it on, only the backlight of the secondary display came on. There was no image, and it didn’t boot into the BIOS.
I decided to try flashing a new BIOS, but since I didn’t want to desolder... -
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... -
I'm requesting a bios .bin for 2 of my hp Probook 450 G3's. Both of which I had forgotten the bios passwords. I stupidly flashed both of them with firmware "made" by the RCUnlocker software and I guess I shouldn't have. The last thing I did was flash both of them with RCUnlocker-fw thinking it would 100% work and left my programmer etc behind and won't have access to them for another 2 days so I figured I'd create a thread to see if I'd be so lucky that someone might have a working file laying around 😝
Laptop number 1:
Model: HP ProBook 450 G3
Motherboard part number:...
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