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Re: probook 4520S bios
Hi. I reset bios in my HP Probook 4720s. Now it wont turn on. Do someone have bios bin for this laptop?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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Re: probook 4520S bios
I tried it and it's the same.. do you have any other ideas?Comment
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hp 4520s
It does not display the image
help meComment
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Read this please https://www.badcaps.net/forum/troubl...before-posting ,then post the laptop serial number
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This specification for the HP ProBook ProBook 4520s Notebook PC can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the ProBook 4520s Notebook PC boardview and ProBook 4520s Notebook PC schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification,...09-06-2024, 05:27 AM
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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 -
Dear All,
Hope that this post is at the right place of the forum.
I am seeking help and technical advice to remove bios admin password from HP ProBook 4520s.
The laptop is operating normally and, I am not facing any major issue with it except; the bios admin password that I found about by coincidence only few weeks back.
As the laptop is operating normally, I am reluctant to take it to a workshop to de-solder the bios chip in order to read it by an external programmer, as I am not an expert in doing such a thing.
After... -
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...
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