Note on archived topics.
01-17-2016 09:30 PM
I do not know the default BIOS administrator password and after three unsuccessful attempts it gives me no error code it simply says system locked. Need help asap!
01-19-2016 06:06 PM
Unfortunately, business machines such as Probooks or Elitebooks have more stringent security than consumer models - they don't produce 'halt codes', the password cannot be derived from the Serial No. and the code is stored in non-volatile memory so removing the RTC cell will not reset the password in this case.
If you Contact HP Business support they should be able to send you a customised SMC.bin file which you can use at boot to reset the password.
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Windows Insider MVP
01-19-2016 11:14 PM - edited 04-09-2016 09:44 AM
4540s that's a tough one.
When talking to the HP rep ask them to escalate your service request.
Or download these files.
Insert clean USB flash drive.
Then run USB Image tool.
Choose the flash drive then click on RESTORE.
After restore remove flash drive.
Insert flash drive into locked laptop and boot.”If HDD is installed remove before booting.”
At C:\OUTPUT type CD.. “Then hit enter”
Type HPBR “Then hit enter”
First thing is to save your settings.
Select #3 re-program.
Press “S” to save system information.
Type HPBR and hit enter.
Since your model is not listed select “SHOTGUN.”
After reboot repeat “SHOTGUN” a second time.
Let us know the result so I can update the list.
Some instructions here. “If you cannot boot from USB there are instructions to make a bootable HDD.”
More help here.
I must inform you that these services are not endorsed by HP, and that HP is not responsible for any damage that may arise to your system by using these services. Please be aware that you do this at your own risk.
03-11-2016 06:39 AM
04-09-2016 04:30 AM
helo. tahnks for you post. but how it is so dificulted service. i cant understend this kind of programing de bios computers. so it wil make me untrusting the probooks models. i have used the linux services like ubcd to clean this password but is realy impossible. i will do wat you have advised to me.