T14 Gen 2 (Type 20W0, 20W1)

[skazide]

hello , plz i have this lap t14 gen2 st : PF3QYDY6 , sometime display sometime no , sometime screen blue . thanks

[hoaca388]

Re: T14 Gen 2 (Type 20W0, 20W1)

hello , plz i have this lap t14 gen2 st : PF3QYDY6 , sometime display sometime no , sometime screen blue . thanks

T14 Gen 2 Laptop (ThinkPad) - Type 20W1

[skazide]

Re: T14 Gen 2 (Type 20W0, 20W1)

T14 Gen 2 Laptop (ThinkPad) - Type 20W1

thanks bro ,pc not not turnin on ..i did return ec original and repair main dump & clean ...pc turn on but not display with same issue ..i think problem maybe not bios ..i will cheek thank you bro for your help

[ThinkpadFlasher]

Thinkpad T14 Gen 2 (20W0)
SN: PF-2WQMVG

Symptoms:
30 second black screen on boot
EC firmware number not listen in BIOS
NVME drive not detected
Can only boot into a Linux OS with compatibility options turned on (Not using IGPU I presume?)
Cannot boot into an OS otherwise
Network card and ethernet port not functioning

Initial problem:
Didn't boot/intermittent boot. Black screen with nothing showing up

Attempted Fix:
Flashed new EC and BIOS, did not clean ME (I was getting errors with the intel tool)

Other symptoms:
Bios dump seems to be partially corrupted, ME analyzer was throwing up an unable to read error at 0x29000


Any help would be greatly appreciated, I'm very grateful for anyone who takes their time to look at my issue

BIOS and EC binary dumps have been posted below.

[Vesko356]

Thread merged.
Please use the forum search to find related threads where you can post your request. You're NOT allowed to start a new thread if there's an existing one!!!

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/troubl...before-posting

[hoaca388]

Thinkpad T14 Gen 2 (20W0)
SN: PF-2WQMVG

Symptoms:
30 second black screen on boot
EC firmware number not listen in BIOS
NVME drive not detected
Can only boot into a Linux OS with compatibility options turned on (Not using IGPU I presume?)
Cannot boot into an OS otherwise
Network card and ethernet port not functioning

Initial problem:
Didn't boot/intermittent boot. Black screen with nothing showing up

Attempted Fix:
Flashed new EC and BIOS, did not clean ME (I was getting errors with the intel tool)

Other symptoms:
Bios dump seems to be partially corrupted, ME analyzer was throwing up an unable to read error at 0x29000


Any help would be greatly appreciated, I'm very grateful for anyone who takes their time to look at my issue

BIOS and EC binary dumps have been posted below.

T14 Gen 2 Laptop (ThinkPad) - Type 20W0

[ThinkpadFlasher]

T14 Gen 2 Laptop (ThinkPad) - Type 20W0

I have attempted to flash the provided EC and BIOS binaries. When they are flashed to the board, it does not boot under any condition. When I flash the files provided for the 20W1, the board boots into the BIOS, but the issues mentioned in my original post appear. What may be the issue causing this?

Thank you for taking your time to help me on my issue

[qayyum786]

keep your original ec and flash out image only
if no luck than flash 2nd one both ec and main

[ThinkpadFlasher]

None of these worked, so I attempted to re-flash the dumps that at least let the laptop POST. After this, the laptop doesn't post and just has a black screen with a charging port LED that lights up.
I'm out of ideas here, but thank you for everyone who attempted to help me, I really appreciate your time and effort .

[omaryou]

HELLO CAN SOMONE HELP ME TO UNLOCK BIOS FOR LENOVO T14 G2
SN PF-3LQ6JD
TYPE 20W1-S1CS01
MOTHERBOARD
HT4B0 / HP4B0 / HT5B1 / HP5B1 / HT4B2
NM-353 REV 1.0

[peste]

merged post...

[Munbi1215@gmail.com]

Re: T14 Gen 2 (Type 20W0, 20W1)
SN : R9-12AYX8
Help :
Does not recognize ssd

[Alexey Polyakov]

Does anyone have working BIOS (with clean ME) dump for T14 gen 2 older revision (NM-353 REV 0.3)?
Share it, please.
p.s. i don't have sn, no stickers on back cover, no box, nothing... only laptop with messed bios (post ok, but it won't boot from any source, lile ssd, usb or cd drive or anything)

[SMDFlea]

Does anyone have working BIOS (with clean ME) dump for T14 gen 2 older revision (NM-353 REV 0.3)?
Share it, please.
p.s. i don't have sn, no stickers on back cover, no box, nothing... only laptop with messed bios (post ok, but it won't boot from any source, lile ssd, usb or cd drive or anything)

post the corrupt bios

[Alexey Polyakov]

post the corrupt bios

Thanks for the reply, dumps attached.

[Alexey Polyakov]

Well, after some exercises i have manage to build BIOS image borrowed from this forum with injected (by me) clean ME region. And this image even works, at least laptop is booting now to any OS from any source. But.. always there is a but:

• BT not working at all, not detected by OS (lsusb show nothing)
• Sound are disappearing after suspend or power jack insert/remove. It is remarkable, sound device still presented at OS, it even show sound levels - but speakers keeps silence.

[unax]

Hello all, first timer, please don't shoot. Could I please have some help / any advice?

Laptop: Lenovo Thinkpad T14 Gen2 type 20W0
S/N: PF3B5BKX (on sticker with dash: PF-3B5BKX)
MB: HT4B0/HP4B0/HT5B1/HP5B1/HT4B2, NM-D352 Rev: 1.0

Symptoms: pressing power on, fan spins up but no POST, never getting to BIOS.
At first occurence battery drain solved the problem, but after I disabled fast startup in win11 it doesn't help anymore. CMOS battery has been replaced. Tried with built-in battery disconnected & on main charger, SSD removed etc, makes no difference. Fan spins, no POST, fan turns off.

I suspect corrupt BIOS/EC. Dumps attached.
Thanks in advance!

[hoaca388]

Hello all, first timer, please don't shoot. Could I please have some help / any advice?

Laptop: Lenovo Thinkpad T14 Gen2 type 20W0
S/N: PF3B5BKX (on sticker with dash: PF-3B5BKX)
MB: HT4B0/HP4B0/HT5B1/HP5B1/HT4B2, NM-D352 Rev: 1.0

Symptoms: pressing power on, fan spins up but no POST, never getting to BIOS.
At first occurence battery drain solved the problem, but after I disabled fast startup in win11 it doesn't help anymore. CMOS battery has been replaced. Tried with built-in battery disconnected & on main charger, SSD removed etc, makes no difference. Fan spins, no POST, fan turns off.

I suspect corrupt BIOS/EC. Dumps attached.
Thanks in advance!

Try

[unax]

Try

Thanks, only just got it back together - unfortunately no, same issue.
I suspect the issue might be with U2202 - would you have a fix for that one?

[cevar_blackwing]

After removing all power sources, then reconnecting again the screen showed:

Bios Self Healing Backup with a progress bar

After some time, the laptop booted to:

0271: Check Date and Time settings
0183: Bad CRC of Security Settings in EFI variable

Press F1 to enter setup.

After pressing F1, it would go to Thinkpad BIOS but then it would hang after a second. After multiple attempts of restarting and power cycling, it now has No Display.

I took a backup of both U2201 (BIOS) & U2202 (EC) and flashed the files from a downloaded file named:

HT4B0_HP4B0_HT5B1_HP5B1_HT4B2_NM_D352_REV_2_0_U2201_&_U2202_&1MB TYPE 20W7

After flashing just the U2201, the laptop would only power on when the battery is connected. And also the charging indicator beside the Type-C Port is now blinking in orange at regular intervals. It was a constant orange before flashing U2201 above. My Type C Power Meter is power cycling too. Upon investigating further, it looks like the U2201 from above archive belongs to a Thinkpad P15s Gen 2 (same motherboard model) that has a Discrete Nvidia GPU. Is it possible that I made a mistake flashing this version of BIOS file? My Thinkpad T14 Gen 2 doesn't have Discrete Nvidia GPU.

I stopped myself from further damaging my laptop and just uploaded the BIOS Dumps. Maybe it is corrupted and you can help me. Thanks in advance!

I tried searching here with the same situation as mine, but didn't find any. If you feel like I made a mistake creating a new thread, maybe you can correct me and merge it to the appropriate thread.

Motherboard: NM-D352 REV 2.0
Machine Type Model: 20W1S28P1R
System-Unit Serial Number: PF-3P6MJ4

[peste]

post merged..next time look for a thread with the name and model, motherboard model of the laptop, and post there, if you can't find it, then make a new thread..

[cevar_blackwing]

Good Day!

I tried all of the bios files from this thread and none of them worked. Some of them would just power cycle the board continuously (only 5v withy my Type C Power Meter) and the others would not even turn on (20v with my Type C Power Meter). Only my original dumps showed better results (would POST). Can someone fix my corrupted dumps? Thanks!