Badcaps.net Forum
Go Back   Badcaps Forums > Search Forums
Register FAQ Calendar Search Today's Posts Mark Forums Read

Showing results 1 to 25 of 215
Search took 0.00 seconds.
Search: Posts Made By: Andreasbest
Forum: BIOS Requests ONLY! 07-23-2020, 02:27 AM
Replies: 1
Views: 61
Posted By Andreasbest
HP 8470p is bios password extract possible?

Hello!
I bought a lot of bios locked 8470p, all have the same bios password and i have all tools and software to dump bios so i was wondering, if there is any way to extract the password from one of...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-21-2020, 02:31 AM
Replies: 3
Views: 158
Posted By Andreasbest
Re: 8470p 16 pin BIOS and CH341A connection question

Yes i already did it, the CH341A has the pins i need on the right side. I'll upload photo when convertion is done.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-18-2020, 02:17 AM
Replies: 3
Views: 158
Posted By Andreasbest
Exclamation 8470p 16 pin BIOS and CH341A connection question

Hello.
I got a HP 8470p with SOP16 bios chip and a SOP8 CH341A programmer.
I don't understand how to connect the SOP8 CH341A interface to SOP16 clip that i bought to connect it on 8470p and...
Forum: BIOS Requests ONLY! 06-23-2020, 04:23 AM
Replies: 80
Views: 7,934
Posted By Andreasbest
Forum: BIOS Requests ONLY! 06-22-2020, 01:18 AM
Replies: 80
Views: 7,934
Posted By Andreasbest
Re: Lenovo Unlock Dxe Driver Bios Collection

Do they mean exclusively OR laptop must be sent in their store?
Forum: BIOS Requests ONLY! 06-21-2020, 02:16 AM
Replies: 80
Views: 7,934
Posted By Andreasbest
Re: Lenovo Unlock Dxe Driver Bios Collection

You can buy the DXE patch from here https://www.allservice.ro/forum/viewtopic.php?t=3044 (80$) and then post it here to patch it and make it work in all T490. Plus you help the community :)
Forum: BIOS Requests ONLY! 06-05-2020, 09:52 AM
Replies: 80
Views: 7,934
Posted By Andreasbest
Re: Lenovo Unlock Dxe Driver Bios Collection

I try in T440.
Flashed the patched file but screen remains black, only power led on
I put some adhesive tape in bottom switch,
Forum: BIOS Requests ONLY! 06-03-2020, 01:09 PM
Replies: 80
Views: 7,934
Posted By Andreasbest
Re: Lenovo Unlock Dxe Driver Bios Collection

So the files from #1 post (Lenovo T440 in my case) will work in both T440 that i got, right?
Forum: BIOS Requests ONLY! 06-03-2020, 03:48 AM
Replies: 80
Views: 7,934
Posted By Andreasbest
Re: Lenovo Unlock Dxe Driver Bios Collection

So i just backup my original dump
i store it
then i write the patched T440 that is available in the post that you show me
i follow the procedure
and BIOS password is gone forever?
Forum: BIOS Requests ONLY! 06-03-2020, 03:28 AM
Replies: 80
Views: 7,934
Posted By Andreasbest
Re: Lenovo Unlock Dxe Driver Bios Collection

Sorry but my english aren't so good so i have a noob question.
When i try to enter bios i get the screen in attachment.
The procedure on this thread to unlock DXE driver will remove it??
Forum: BIOS Requests ONLY! 05-22-2020, 01:46 AM
Replies: 80
Views: 7,934
Posted By Andreasbest
Re: Lenovo Unlock Dxe Driver Bios Collection

How do i use the patche attached in first post?
I just write it in winbond and follow the procedure:

Remove all battery and CMOS battery

press F1 to enter setup: password 1234
wait 20sec or...
Forum: BIOS Requests ONLY! 05-21-2020, 12:58 AM
Replies: 0
Views: 109
Posted By Andreasbest
Exclamation Lenovo T440 Bios password removal

Hello!
I bought 2x Lenovo T440 both locked with bios PW.
I want to know if i can read them and then upload dump with CH341A programmer (...
Forum: BIOS Requests ONLY! 01-21-2020, 10:59 AM
Replies: 1
Views: 212
Posted By Andreasbest
Exclamation Re: Lenovo Thinkpad Edge E540 Bios password removal

Ok managed to remove the password without flashing or reprogramming or buying anything at all.
The solution was easy, i located EEPROM (attachment #1), i solder 2 cables in pins 5 and 6 and then i...
Forum: BIOS Requests ONLY! 01-21-2020, 05:00 AM
Replies: 1
Views: 212
Posted By Andreasbest
Exclamation Lenovo Thinkpad Edge E540 Bios password removal

Hello!
i got in my hands a E540 with locked BIOS but i'm a bit confuse.
Some say that in this laptop the BIOS PW is not stored in EEPROM, others that it does store in EEPROM and some that if i...
Forum: Schematic Requests ONLY! 01-17-2020, 11:51 AM
Replies: 0
Views: 168
Posted By Andreasbest
Exclamation Lenovo Thinkpad L540 Schematic anyone?

Hello
I need the Lenovo Thinkpad L540 diagram, i have dead USB ports and i'm trying to figure out.
Thank you!
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-07-2020, 03:33 AM
Replies: 14
Views: 415
Posted By Andreasbest
Re: Dell E5440 completely dead, no LED.

@ piernov & @mcplslg123
Just removed the PU51 and the shortcircuit is gone.
So it's PU51 broken?

(sorry for the delay was on vacation for New year eve)
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-31-2019, 05:23 AM
Replies: 14
Views: 415
Posted By Andreasbest
Re: Dell E5440 completely dead, no LED.

Ok found it, was right after the pin 13, i removed it, the pc69 is not shortcircuited but the pin 13 remains shortcircuited to ground.
So the PU51 is faulty or i need to remove it and check for...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-31-2019, 05:03 AM
Replies: 14
Views: 415
Posted By Andreasbest
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-29-2019, 06:23 AM
Replies: 14
Views: 415
Posted By Andreasbest
Re: Dell E5440 completely dead, no LED.

0,5Ω is the resistance to ground.
So it's not the PU51 that is faulty but another component that i must found using vontage injection?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-29-2019, 06:19 AM
Replies: 14
Views: 415
Posted By Andreasbest
Re: Dell E5440 completely dead, no LED.

Yes it's indeed TPS51225C (1225C is written on it)
Pin 13 is grounded.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-29-2019, 04:55 AM
Replies: 14
Views: 415
Posted By Andreasbest
Re: Dell E5440 completely dead, no LED.

pin 3 0v
pin 6 0v
pin 8 0,24v
pin 12 17,24v
pin 13 0v
pin 18 0,03v
pin 20 0v

What do you think?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-28-2019, 04:28 AM
Replies: 14
Views: 415
Posted By Andreasbest
Re: Dell E5440 completely dead, no LED.

Yes this is what i thought too but i really don't found connection betwen them even with the ohmeter.
I count 5 pins from the dot counter clockwise.
No liquid damage, motherboard looks like new, no...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-28-2019, 04:06 AM
Replies: 14
Views: 415
Posted By Andreasbest
Exclamation Dell E5440 completely dead, no LED.

Hello!
I have a E5440 (second hand) that doesn't power on, it's not shortcircuited as the charger's led remains on when i plug it but i have low voltage.
Here are some measurements i took before...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-23-2019, 03:38 AM
Replies: 16
Views: 463
Posted By Andreasbest
Re: Lenovo T430 doesn't power on with battery

Yes i already did it, no shortcircuit to the ground so i applied some 500mA thread over the fuse and everything worked like a charm.
Charges battery, working with battery and with charger.
Thank...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-21-2019, 05:47 AM
Replies: 16
Views: 463
Posted By Andreasbest
Re: Lenovo T430 doesn't power on with battery

I have some thread 0.5A @ 220V
May i use this?
Showing results 1 to 25 of 215

 
Forum Jump


Badcaps.net Technical Forums 2003 - 2020
Powered by vBulletin ®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 01:10 PM.
Did you find this forum helpful?