Thinkpad P52
Type 20M9, 20MA
S/N: PF15XWHP
Mobo: NM-B562

I'm attempting to revive an out of warranty Thinkpad P52 that failed a BIOS update last year. The update stalled for hours until it was manually shut down. Since then, power and keyboard lights come on briefly, but no display. Its diagnostic beep tune returns as 0285 "TCG-complient funcationality-related error (might be the TPM initialization failure)."

I've just received a CH341A programmer and cleanly read the memory, but was unsuccessful at patching my own binary from Lenovo's iso....

Good day. I apologize if I posted this in the wrong topic. I saw somebody selling a Thinkpad E495 with a Ryzen 3500U CPU near me. In the pictures the laptop is running windows 10. I contacted the seller and asked a few questions about upgradability and if it has a bios password on it. He confirmed it has a bios password. I searched through the forum, I found a guide regarding removing the bios password using the autopatcher, I also found a thread with the e495 where people requested help with unlocking the bios password.

I have a few questions:

• If I would buy this laptop and have

...

Hi!
Went dumpster-diving and found a bricked Lenovo P14S in trash, few weeks earlier. Symptoms - no screen, no POST, no beep, just keyboard LEDs flashing on powerup. Mute button+LED was responding though, and the display self-test was still working (via the key combo Ctrl+Fn+Power held for some seconds, see the Service manual).

Incidentally, Windows 11 have recently started auto-flashing computer BIOS in our region. Even more suspiciously, Lenovo has released a BIOS update just few days before the PC was trashed. About a week later, the BIOS update image has been oficially marked...

Hello everyone,

I have a Lenovo Yoga Slim 6 14IRP8 that got stuck in a BIOS recovery loop after a BIOS update was interrupted through Lenovo Vantage.

Here are my device details:
- **Model:** Yoga Slim 6 14IRP8
- **Serial Number:** YX07A9YJ
- **OS:** Windows 11 64-bit

**Problem:**
Every time I boot, I get the message: "Do you want to recovery ROM part? (Caution: Not every OS is bootable in Recovery Mode.)" with two options: YES or NO. The screen just stays there with both options and does not do anything on its own. When I...

Need Clean BIOS/EC Bin File for Lenovo ThinkPad Yoga 11e - Stuck with 0275 Error CMS

Hello everyone,

I am attempting a repair on a Lenovo ThinkPad Yoga 11e that is currently stuck at boot with the error: "0275 error CMS" even after setup new bios battery and will not allow me to enter the BIOS/Setup.

This is a critical issue that I believe requires flashing the BIOS chip directly using a programmer (e.g., CH341A/RT809H), as standard software updates or resets are not possible.

I have opened the laptop and identified the main BIOS chip...