latitude 5420 board LA-k491P bios problem.

[bachir2004]

have a dell latitude 5420 bord LA-k491P with bios problem(does not switch on).
the original dump is corrupted.Can someone please help?

[hoaca388]

Re: latitude 5420 bord LA-k491P bios problem.

Here

[bachir2004]

Re: latitude 5420 bord LA-k491P bios problem.

Thanks will test it.

[bachir2004]

Re: latitude 5420 bord LA-k491P bios problem.

not working.Machine does not even turn on.

[lapfix]

Re: latitude 5420 bord LA-k491P bios problem.

sevice tag !

[bachir2004]

Re: latitude 5420 bord LA-k491P bios problem.

sevice tag !

ok.see pm.

[lapfix]

Re: latitude 5420 bord LA-k491P bios problem.

try

[bachir2004]

Re: latitude 5420 bord LA-k491P bios problem.

thank you so much.With this it swiches on normally but still no image.

[lapfix]

Re: latitude 5420 bord LA-k491P bios problem.

Just wait a few second ,laptop may restart few times too

[bachir2004]

Re: latitude 5420 bord LA-k491P bios problem.

This one is a real pain.changed the screen finally got image machine boots but after entering the service tag got an error(wrong service tag) witch is weird restarted it and no boot no image again.

[bachir2004]

Re: latitude 5420 bord LA-k491P bios problem.

Just wait a few second ,laptop may restart few times too

I know.bad screen.thank you so much your bios works.

[jm801]

dell 5420 LA-K491P PASWORD

could you help me unlock this bios

[aldopc]

Re: dell 5420 LA-K491P PASWORD

could you help me unlock this bios

Test and comments

[skazide]

Re: latitude 5420 bord LA-k491P bios problem.

plz need help , need to unlock this dump

[skazide]

Re: latitude 5420 bord LA-k491P bios problem.

problem solved thanks

[jm801]

Re: dell 5420 LA-K491P PASWORD

Test and comments

thank you it worked you are very kind

[darckreign1984]

Re: latitude 5420 bord LA-k491P bios problem.

please how to read this bios?
laptop died after update in windows

bios chip its winbond W25R256JV

i have tl866II
thanks

[SMDFlea]

Re: latitude 5420 bord LA-k491P bios problem.

please how to read this bios?
laptop died after update in windows

bios chip its winbond W25R256JV

i have tl866II
thanks

It isn`t in the TL866II support list,so choose another chip, same size and voltage such as W25Q256 and untick check ID

[darckreign1984]

Re: latitude 5420 bord LA-k491P bios problem.

It isn`t in the TL866II support list,so choose another chip, same size and voltage such as W25Q256 and untick check ID

for tl866 it give me a schematics for so and si, in this chip are 4 pin for data In out - what to solder?

IO0
IO1
IO2
IO3


and this chip dont have wp reset hold pin assigned

[darckreign1984]

Re: latitude 5420 bord LA-k491P bios problem.

for tl866 it give me a schematics for so and si, in this chip are 4 pin for data In out - what to solder?

IO0
IO1
IO2
IO3


and this chip dont have wp reset hold pin assigned

i used
MOSI: Master Out Slave In (data output from master); PIN 5 TL866 TO PIN 2 IO0
MISO: Master In Slave Out (data output from slave) pin 4 tl866 to pin 5 io1 - when i use this - all bin was 000000


tried this variant to
MOSI: Master Out Slave In (data output from master); PIN 5 TL866 TO PIN 5 IO0
MISO: Master In Slave Out (data output from slave) pin 4 tl866 to pin 2 io1 - same result all bin memory 0000000