Hi need bios for t14s gen3 jx3c5 jt4c5 nm-e422 rev 1.0

[MAZMAZ23]

Hi need bios for t14s gen3 jx3c5 jt4c5 nm e422 rev 1.0
OLD BIOS NO DISPLAY

[hardware1]

Re: Hi need bios for t14s gen3 jx3c5 jt4c5 nm e422 rev 1.0

Hi need bios for t14s gen3 jx3c5 jt4c5 nm e422 rev 1.0
OLD BIOS NO DISPLAY

Here's your New BIOS, it's a Virgin BIOS from Lenovo with your Windows Key.

I noticed that you asked for the same BIOS in a Paid site, so I'm just wondering if his BIOS solved your device Problem?

[MAZMAZ23]

Re: Hi need bios for t14s gen3 jx3c5 jt4c5 nm e422 rev 1.0

Same problem no display even with bios of site a paid

[5dprince]

The same question, has it been resolved?

[Zalman]

Can someone please check my BIOS dumps to see if they're okay?
The device powers on but doesn't beep, even after disconnecting all power, including the CMOS battery, overnight.
The keyboard lights up, the screen backlight turns on, but there's no image (LCD test passed, and an external monitor showed no output with the LCD cable disconnected).
The fan spins, the CPU gets warm, and the battery charges.

In the hex editor, I noticed Fedora and Ubuntu were installed, and the Windows key section looks suspicious.
The device allegedly runs UEFI 1.40 (R22ET70W), which cannot be downgraded according to the changelog.
Comparing my dump with older (pre-1.40) BIOS dumps found online, I found a missing section in mine (highlighted in the screenshot), but I couldn't find a dump as recent as this version - perhaps the structure has changed.
I also don't have the tools to flash EC firmware if that's the issue.
Flashing an older dump to a 32MB chip (I didn't touch the 16MB chip) resulted in no LCD backlight, but reverting to the original BIOS restored the initial symptoms.

Serial Number: PF3X12TT
Machine Type Model: 21CQ000GUS

[hardware1]

Can someone please check my BIOS dumps to see if they're okay?
The device powers on but doesn't beep, even after disconnecting all power, including the CMOS battery, overnight.
The keyboard lights up, the screen backlight turns on, but there's no image (LCD test passed, and an external monitor showed no output with the LCD cable disconnected).
The fan spins, the CPU gets warm, and the battery charges.

In the hex editor, I noticed Fedora and Ubuntu were installed, and the Windows key section looks suspicious.
The device allegedly runs UEFI 1.40 (R22ET70W), which cannot be downgraded according to the changelog.
Comparing my dump with older (pre-1.40) BIOS dumps found online, I found a missing section in mine (highlighted in the screenshot), but I couldn't find a dump as recent as this version - perhaps the structure has changed.
I also don't have the tools to flash EC firmware if that's the issue.
Flashing an older dump to a 32MB chip (I didn't touch the 16MB chip) resulted in no LCD backlight, but reverting to the original BIOS restored the initial symptoms.

Serial Number: PF3X12TT
Machine Type Model: 21CQ000GUS

Here is you new file, it's a virgin BIOS from Lenovo.
Your laptop should works fine if the issue was related to BIOS.

[Zalman]

Here is you new file, it's a virgin BIOS from Lenovo.
Your laptop should works fine if the issue was related to BIOS.

Thanks, man! Unfortunately, the outcome is the same. Device powered on, there was some delay probably due to memory training, it then turned off and back on, screen backlight came on, but as with my original bios there are no beeps and no image. CPU is warm, but I guess we can conclude that it is either the CPU or the RAM to blame. Not sure if it is important to have main BIOS chip contents in sync with secondary 16MB chip. What is it responsible for? And there's also a chance that EC FW could be damaged, but I do not have the means to verify that. I appreciate your time and effort anyway!