Hp elitebook 840 g5 bios password

[taoufik]

Re: Hp ellİtebook 840 g5 bİos password

can someone help me please with elitebook 850 g5
the 2 bios unlocked with HPUnlocker but the pc turn on without display **black screen** even restoring original bin

[SMDFlea]

Re: Hp ellİtebook 840 g5 bİos password

can someone help me please with elitebook 850 g5
the 2 bios unlocked with HPUnlocker but the pc turn on without display **black screen** even restoring original bin

If you have a black screen even with the original maybe you blew a resistor away near the bios chip,or you havnt soldered it properly. You can try another chip as well if you had any problems verifying

[taoufik]

Re: Hp ellİtebook 840 g5 bİos password

If you have a black screen even with the original maybe you blew a resistor away near the bios chip,or you havnt soldered it properly. You can try another chip as well if you had any problems verifying

all seems ok , and bios is good , still can read or write

[ymifdal]

Re: Hp ellİtebook 840 g5 bİos password

@peste @SMDFlea
Can somebody please explain to me why these varying securities are so different
Like for example in my case I did HPUnlocker for the 256 chip password still there
Then I also did RCUnlocker for the 128 Chip.. Password still there

[peste]

Re: Hp ellİtebook 840 g5 bİos password

@peste @SMDFlea
Can somebody please explain to me why these varying securities are so different
Like for example in my case I did HPUnlocker for the 256 chip password still there
Then I also did RCUnlocker for the 128 Chip.. Password still there

use RCUnlocker only on the 128mb chip. the other chip remains original ....

[ymifdal]

Re: Hp ellİtebook 840 g5 bİos password

use RCUnlocker only on the 128mb chip. the other chip remains original ....

I did RCUnlock 128 only but password still there
That's why I am so confused.. I have HP 840 G5

[peste]

Re: Hp ellİtebook 840 g5 bİos password

I did RCUnlock 128 only but password still there
That's why I am so confused.. I have HP 840 G5

post the original 128mb bios here.

[ymifdal]

Re: Hp ellİtebook 840 g5 bİos password

post the original 128mb bios here.

Aight

[peste]

Re: Hp ellİtebook 840 g5 bİos password

Aight

try this + the original 32mb bios enter the bios and bring the security settings to the factory defaults, then turn on the laptop.

[ymifdal]

Re: Hp ellİtebook 840 g5 bİos password

try this + the original 32mb bios enter the bios and bring the security settings to the factory defaults, then turn on the laptop.

I have tried your unlocked 128 eventhough I have already did RCunlock it myself. the result of course is the same, the password remains.. I also did write both 256 with original dump and 128 with the one you posted and no change pw still there unfortunately

[ymifdal]

Re: Hp ellİtebook 840 g5 bİos password

use this program for the 33MB bios, the 16MB one remains the same.

https://www.badcaps.net/forum/showthread.php?t=79956

I don't know.. Is it because I have read the entire post to begin with and tried your method first as shown in quote? Unlocking the 256
Then after it didn't work I did restore 256 to original and unlock the 128 only.. which it didn't work as well
Just updating you with what I did so far because I don't get the blockade

[poonigan]

Re: HP BIOS unlock tool

Hello,

New here but I am looking for some help. I have quantity 25 Elitebook 840 G5 laptops. For whoever is curious, these were all sold directly to a company by HP and returned. Then bought through liquidation. All of these are brand new factory sealed but when opened they have been pre-locked with an admin password by HP. So, it is my job to get each one unlocked and I am trying to work out the simplest/fastest way.

My questions for anyone who has done this on an 840 G5 are mainly

1. Do I need to remove the board to properly resolder the 25Q256JVEG chip?
2. Is there any special steps with these 840 G5? Seen posts about the second chip being on the backside of the board and it needing to be reprogrammed... Want to be aware if this is needed.
3. Lastly, for doing a batch this large can anyone give advice on how to make this go quickly? I saw this original post talking about adding a command to the registry but I am not sure how that works or how it will save time.

Thank you in advance for the help!!

[peste]

Re: HP BIOS unlock tool

Hello,

New here but I am looking for some help. I have quantity 25 Elitebook 840 G5 laptops. For whoever is curious, these were all sold directly to a company by HP and returned. Then bought through liquidation. All of these are brand new factory sealed but when opened they have been pre-locked with an admin password by HP. So, it is my job to get each one unlocked and I am trying to work out the simplest/fastest way.

My questions for anyone who has done this on an 840 G5 are mainly

1. Do I need to remove the board to properly resolder the 25Q256JVEG chip?
2. Is there any special steps with these 840 G5? Seen posts about the second chip being on the backside of the board and it needing to be reprogrammed... Want to be aware if this is needed.
3. Lastly, for doing a batch this large can anyone give advice on how to make this go quickly? I saw this original post talking about adding a command to the registry but I am not sure how that works or how it will save time.

Thank you in advance for the help!!

you need an SPI programmer to extract the content from the bios chip and then use the RCUnlocker program which you can find here on the site.. don't forget to make a copy of the bios chip before writing ...

https://www.youtube.com/watch?v=DWWigscuQDY

[jba06]

Re: Hp ellİtebook 840 g5 bİos password

try this + the original 32mb bios enter the bios and bring the security settings to the factory defaults, then turn on the laptop.

Hello what happens if i don't have the 32 original bios no more
laptop no post

[peste]

Re: Hp ellİtebook 840 g5 bİos password

Hello what happens if i don't have the 32 original bios no more
laptop no post

yes ... don't post ... if I understood correctly ... but what's the problem with the laptop ???

[ymifdal]

Re: Hp ellİtebook 840 g5 bios password

I have same problem now..
I only had password activated but now no more post only fan spinning
any clean me plz?

[peste]

Re: Hp ellİtebook 840 g5 bios password

I have same problem now..
I only had password activated but now no more post only fan spinning
any clean me plz?

post both bios .. preferably the original ones..I hope you made a copy ??

[ymifdal]

Re: Hp ellİtebook 840 g5 bios password

FOUND them in my phone storage fortunately made copy there..
Here they are Sir. Also, BIOS contains password lock

[hoaca388]

Re: Hp ellİtebook 840 g5 bios password

FOUND them in my phone storage fortunately made copy there..
Here they are Sir. Also, BIOS contains password lock

Try

[ymifdal]

Re: Hp ellİtebook 840 g5 bios password

Didn't work unfortunately
Only gives me the blinking LED next to the charger