Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message

L540: need bios chip location (photo) please

L430/L530 and later Series
Post Reply
Message
Author
glossywhite
Sophomore Member
Posts: 125
Joined: Sat May 04, 2013 4:33 pm
Location: The Moon, maybe Saturn, or who knows (well YOU don't!)

L540: need bios chip location (photo) please

#1 Post by glossywhite » Fri Apr 07, 2023 4:29 am

Hi there. Having trawled Google high and low for three days, I cannot find where the bios chip is located on my ThinkPad L540. I need to remove the whitelist by backing up the bios and patching the file, signing it and re-flashing the clean file.

If anyone could help, I just need the IC location, for the BIOS chip, as I’m not gonna strip it down until I know.

Many thanks folks. God bless you.
Top
RealBlackStuff
Admin Emeritus
Admin Emeritus
Posts: 23663
Joined: Mon Sep 18, 2006 5:17 am
Location: Loch Garman, Éire

Re: L540: need bios chip location (photo) please

#2 Post by RealBlackStuff » Fri Apr 07, 2023 5:04 am

Look for a chip marked Macronix MX25L6473E or maybe a Winbond W25Q64xxx
No schematics unless you are willing to pay someone.
Maybe this helps: Lenovo ThinkPad L540 disassembly
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, T480, M900 Tiny.

PS: the old Boardroom website is still available on the Wayback Machine.
Top
glossywhite
Sophomore Member
Posts: 125
Joined: Sat May 04, 2013 4:33 pm
Location: The Moon, maybe Saturn, or who knows (well YOU don't!)

Re: L540: need bios chip location (photo) please

#3 Post by glossywhite » Fri Apr 07, 2023 3:45 pm

RealBlackStuff wrote: ↑
Fri Apr 07, 2023 5:04 am
 Look for a chip marked Macronix MX25L6473E or maybe a Winbond W25Q64xxx
No schematics unless you are willing to pay someone.
Maybe this helps: Lenovo ThinkPad L540 disassembly
PAY for a photo showing me where a chip is? :lol:

In case anyone else needs the location, here it is: https://photos.app.goo.gl/kWftxfjfvNt29N8PA
Last edited by glossywhite on Sat Apr 08, 2023 12:29 am, edited 1 time in total.
Top
RealBlackStuff
Admin Emeritus
Admin Emeritus
Posts: 23663
Joined: Mon Sep 18, 2006 5:17 am
Location: Loch Garman, Éire

Re: L540: need bios chip location (photo) please

#4 Post by RealBlackStuff » Fri Apr 07, 2023 8:42 pm

You need to pay for downloading a schematic.
Picture links are free, and it would be nice if they work (except yours, which does NOT work).
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, T480, M900 Tiny.

PS: the old Boardroom website is still available on the Wayback Machine.
Top
Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad L430/L530 and later Series”

Who is online

Users browsing this forum: No registered users and 3 guests