latitude 5420 board LA-k491P bios problem.

[Sparo]

Ayrat Technology You can try this file
I'm posting it for you and the thread (100% working)

Dell Latitude 5420 System BIOS Version : 1.22.0

[Ayrat Technology]

logo remains standing

[SMDFlea]

logo remains standing

post a backup of UT7

[Ayrat Technology]

UT7

[SMDFlea]

UT7

Flash this to UT7 https://www.badcaps.net/filedata/fetch?id=3746754 .Get the recovery RCV file from dell support, make a recovery USB drive and try to boot from it

[Aoden]

DELL Latitude 5420
sn :GGNMNQ3
LA-K491P R2.0
The computer starts up but the screen doesn't display anything. Caps Lock is OK. Output to an external monitor is OK. I've checked that the screen output conditions are perfect. When I remove the CMOS battery, the screen lights up white and red before turning off immediately upon startup.

[Sparo]

DELL Latitude 5420
sn :GGNMNQ3
LA-K491P R2.0
The computer starts up but the screen doesn't display anything. Caps Lock is OK. Output to an external monitor is OK. I've checked that the screen output conditions are perfect. When I remove the CMOS battery, the screen lights up white and red before turning off immediately upon startup.

Hi, Try this file and See if it works for you

Dell Latitude 5420 System BIOS (SKU 0AFD) Version : 1.54.1

[shiyab]

DELL Latitude 5420
sn :GGNMNQ3
LA-K491P R2.0
The computer starts up but the screen doesn't display anything. Caps Lock is OK. Output to an external monitor is OK. I've checked that the screen output conditions are perfect. When I remove the CMOS battery, the screen lights up white and red before turning off immediately upon startup.

hi try

[Aoden]

hi try

The LCD still isn't displaying anything. The issue is likely with the mainboard.

[Aoden]

DELL Latitude 5420
la-k491p r2.0
Please remove the password for me.

[LBTT1121]

DELL Latitude 5420
la-k491p r2.0
Please remove the password for me.

try and feedback

[rudienas]

DELL Latitude 5420
st :5BFV5J3
LA-K491P R2.0

Can somebody remove MDM lock please thank you

[Sparo]

DELL Latitude 5420
st :5BFV5J3
LA-K491P R2.0

Can somebody remove MDM lock please thank you

Hi, try this file

[karmaneraka]

DELL Latitude 5420
st : BLFZCB3
GDF40 LA-K491P R3.0 (A02)

ISSUE with no SSD detected in bios.

[LBTT1121]

DELL Latitude 5420
st : BLFZCB3
GDF40 LA-K491P R3.0 (A02)

ISSUE with no SSD detected in bios.

post the contents of the bios chip even if it is corrupted..
The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

you need an SPI programmer...here is a video for example..https://www.youtube.com/watch?v=DWWi...nnel=ThisIsHow

[karmaneraka]

here the file, im try with fit v15 it give error 179.

[LBTT1121]

here the file, im try with fit v15 it give error 179.

try and feedback

[Laptopszaki.hu]

Hi! Can someone help me?
Dell latitude 5420 turns on, black screen, caps lock led is on, but there is no picture.
SN: FBPC3D3
la-k491p rev 2.0

[Sparo]

Hi! Can someone help me?
Dell latitude 5420 turns on, black screen, caps lock led is on, but there is no picture.
SN: FBPC3D3
la-k491p rev 2.0

Hi, try this BIOS file, Good Luck!

Dell Latitude 5420 System BIOS (SKU 0A20, 0AFD) Version : 1.53.2

[Laptopszaki.hu]

Hi, try this BIOS file, Good Luck!

Dell Latitude 5420 System BIOS (SKU 0A20, 0AFD) Version : 1.53.2

Thanks! It works!