Dell Latitude 5420 Bios Password 8FC8

[trepachka]

I tried it. Same result. In addition, I am now getting 3 ember/6 white blinking pattern indicating bad BIOS.

[minhdigital]

I tried it. Same result. In addition, I am now getting 3 ember/6 white blinking pattern indicating bad BIOS.

Send to you, try ! ( write with old chip, new chip will not work )

[trepachka]

If I understood you correctly, use the chip that came on the motherboard. Not a different chip, correct? What is the reason for that?

[minhdigital]

If I understood you correctly, use the chip that came on the motherboard. Not a different chip, correct? What is the reason for that?

yes, write with chip old bios on the motherboard, if you replace new chip not work because not support

[trepachka]

Ok, I will do that. The original chip is Micron XM25QH256C

[trepachka]

Simply amazing. As you suggested, I applied the patched bin file from post Internet Radio Comedy - Defcon Radio using the original bios chip and the computer is running again. I disabled Absolute and typed the service tag# on 1st boot, followed by Alt-F on 2nd boot and the password is gone.

However, on every boot instead of "Dell" logo I am getting 3rd party logo. Could someone, please take a look at the bin file in post Internet Radio Comedy - Defcon Radio and let the bios logo go back to standard "Dell" one?

Thank you.

[qayyum786]

Simply amazing. As you suggested, I applied the patched bin file from post Internet Radio Comedy - Defcon Radio using the original bios chip and the computer is running again. I disabled Absolute and typed the service tag# on 1st boot, followed by Alt-F on 2nd boot and the password is gone.

However, on every boot instead of "Dell" logo I am getting 3rd party logo. Could someone, please take a look at the bin file in post Internet Radio Comedy - Defcon Radio and let the bios logo go back to standard "Dell" one?

Thank you.

Try from post #618

[b4rdock]

try

still computrace active, can check it plz.i cant disabled computrace

plz

[qayyum786]

still computrace active, can check it plz.i cant disabled computrace

plz

Service Tag: G9QWHR3

try again

[trepachka]

I tried post The Good Capacitors Photo Thread and the computer just flashes the keyboard, no video.

I went with post caps used in ASRock K8-Upgrade M1689? and everything is running fine now. I get the Dell logo now. I did have to reinstall Windows because I was getting "INACCESSIBLE_DEVICE" error. But all is good. Thank you guys.

[b4rdock]

Service Tag: G9QWHR3

try again

hi thanks for reply. but my servicetag is FSNS7G3
not work the file you send me, dont give me video
original yes works video but computrace are activce i need deactivate
can help me fix it plz

thanks

[qayyum786]

hi thanks for reply. but my servicetag is FSNS7G3
not work the file you send me, dont give me video
original yes works video but computrace are activce i need deactivate
can help me fix it plz

thanks

my mistake that i quote you but that file was for @trepachka (Service Tag: G9QWHR3) not for you

[qayyum786]

hi thanks for reply. but my servicetag is FSNS7G3
not work the file you send me, dont give me video
original yes works video but computrace are activce i need deactivate
can help me fix it plz

thanks

Service Tag :- FSNS7G3

Try

[trepachka]

For some reason, when I am attempting to show post number, the software creates a link to the la-la land. Basically, 618 post file didn't work for me but 624 post file worked fine. The Dell logo is gone and so is the password. Thank you.

[b4rdock]

Service Tag :- FSNS7G3

Try

thanks for all your help , but sitll dont works i try the last file you send me and only turn one time and off then not restart like similar case

the bios chip is good cause i reprogram it and turn on ok with video but computrace active 😅

regards

[qayyum786]

thanks for all your help , but sitll dont works i try the last file you send me and only turn one time and off then not restart like similar case

the bios chip is good cause i reprogram it and turn on ok with video but computrace active 😅

regards

Try again

[devp62]

Hi I Have a Dell Latitude 5420 With Bios Password
Service Tag 59MC8C3-8FC8
Please Can some one Unlock Bios for me Thanks

[devp62]

Hi I Have a Dell Latitude 5420 With Bios Password
Service Tag 59MC8C3-8FC8
Please Can some one Unlock Bios for me Thanks

forgot to attach file - Sorry

[rex98]

Hi I Have a Dell Latitude 5420 With Bios Password
Service Tag 59MC8C3-8FC8
Please Can some one Unlock Bios for me Thanks

forgot to attach file - Sorry

1st boot, press F2, write service tag, disable Absolute, save (Apply changes), restart. 2nd boot press Alt+F to exit manufacturing mode

[devp62]

Hi this only starts to flash the back light on for a few seconds and then does a reboot and that's it no boot or backlight on screen, any suggestions, have tried several times, looking the bios the original service tag is present is that normal? Thanks.