Dell Latitude 5400 bios request

[olexky]

According to the description in your notebook's documentation, the service tag is a no-vpro.

According to your motherboard diagram, the no-vpro processor uses two bios:

uc5 8mb
uc6 16mb

You need to join the two files to assemble the biosrom.bin.

No, it is just one chip.

[U_pasta]

No, it is just one chip.

This quote is not for your case, it is for a Latitude 5400 non-vpro.

In your case #199, the bios is vpro 32mb, already sent.

Did you test it? Can you give me feedback on the test?

Thanks

[hongsangkt]

Hello everyone? Can anyone help me with this bios?. This is the original bios, now it won't turn on. I only know the machine information is: currently can't turn on the power.
Dell 5400
Serial: unknown
Service tag: unknown
Motherboard: EDC41 LA-G891P Rev: 1.0 (A00)
File :

[davidebeatrici]

Dell Latitude 5400 that doesn't POST and keeps rebooting. UC6 unpopulated, UC5 is a GD25B256D.

Service tag: 86KT733
Motherboard: EDC41 LA-G891P Rev: 1.0 (A00)

[davidebeatrici]

Send to you

Tried this one, but same behavior unfortunately.

https://streamable.com/e/tclrk8

Fan at max speed, keyboard backlight and caps lock indicator always on except when it fully restarts.

[davidebeatrici]

Latitude 5400

Same with this one. I have also tried replacing the ME region in the original dump as explained at https://winraid.level1techs.com/t/gu...lization/31277.

The processor is not getting warm and the coil near it has no voltage. The RAM voltage is OK. Battery doesn't appear to be charging.

Any ideas?

[hoaca388]

Same with this one. I have also tried replacing the ME region in the original dump as explained at https://winraid.level1techs.com/t/gu...lization/31277.

The processor is not getting warm and the coil near it has no voltage. The RAM voltage is OK. Battery doesn't appear to be charging.

Any ideas?

Latitude 5400

Service Tag: 86KT733

[davidebeatrici]

Thank you.

Unfortunately I see no changes, but I have extra information: when I connect the battery and turn on the computer, after a while the LED on the front shows the following sequence: 2 amber, 1 white

According to Dell's manual this indicates CPU failure... can we exclude a BIOS issue or do you want to provide another binary I can test?

[hoaca388]

Thank you.

Unfortunately I see no changes, but I have extra information: when I connect the battery and turn on the computer, after a while the LED on the front shows the following sequence: 2 amber, 1 white

According to Dell's manual this indicates CPU failure... can we exclude a BIOS issue or do you want to provide another binary I can test?

No, focus on finding hardware problems.

[davidebeatrici]

Thank you, your BIOS is working perfectly (and probably the other ones I flashed too).

The issue was indeed the CPU, which was actually being supplied with ~1V but appeared to be dead. I solved it with a proper reflow.



I hope this is helpful for anyone in the same situation.

And, for reference, here are some thermal images before the fix:

[OmanCloud]

Dell Latitude 5400
Service Tag (S/N) 4S34X33
MB Part number LA-G891P
BIOS IS LOCKED
PLEASE ANY ONE HELP
HERE IS MY BIOS LOCKED

[peste]

Dell Latitude 5400
Service Tag (S/N) 4S34X33
BIOS IS LOCKED
PLEASE ANY ONE HELP
HERE IS MY BIOS LOCKED

try...

[OmanCloud]

try...

Same

[LBTT1121]

Dell Latitude 5400
Service Tag (S/N) 4S34X33
MB Part number LA-G891P
BIOS IS LOCKED
PLEASE ANY ONE HELP
HERE IS MY BIOS LOCKED

try and feedback

[david19]

Dell Latitude 5400
Service Tag (S/N) HCMRYY2
BIOS IS LOCKED
PLEASE ANY ONE HELP
HERE IS MY BIOS LOCKED - THANKS IN ADVANCE

[OmanCloud]

Dell Latitude 5400
Service Tag (S/N) HCMRYY2
BIOS IS LOCKED
PLEASE ANY ONE HELP
HERE IS MY BIOS LOCKED - THANKS IN ADVANCE

Try and Give Feedback

[david19]

Try and Give Feedback

worked but wrong SERVICE TAG. many thanks

[hoaca388]

Dell Latitude 5400
Service Tag (S/N) HCMRYY2
BIOS IS LOCKED
PLEASE ANY ONE HELP
HERE IS MY BIOS LOCKED - THANKS IN ADVANCE

Unlocked

[ingenieroedu]

Hello everyone, help me remove the password from this laptop.
Motherboard model:
DELL Latitude 5400
Motherboard: EDC41 LA G891P Rev 1.0 (A00) 2019-03-28
Service Tag: G40RF13

[SMDFlea]

Hello everyone, help me remove the password from this laptop.
Motherboard model:
DELL Latitude 5400
Motherboard: EDC41 LA G891P Rev 1.0 (A00) 2019-03-28
Service Tag: G40RF13

Read the bios guides password topic, you might find a way to unlock it yourself, depending on what the suffix is ->

BIOS guides, methods, resources and tools
https://www.badcaps.net/forum/troubl...rces-and-tools