I can not update the BIOS of the HP Probook 640 G1. You need an administrator password.

[CheengiZ]

After an incorrect password was entered or the ENTER button was pressed three times, the stop code does not appear. Immediately ask you to reboot the system.

[REO51ST · Accepted solution]

@CheengiZ

For that model you will need to contact HP in your region and they should be able to send you a customized SMC.bin file which you can use at boot to reset the password.

Phone >> http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html

When talking to the HP rep ask them to escalate your service request.

Just to note:

Do not try removing the RTC/BIOS battery.  It will not remove the password, but it will reset the clock - as SMC files are time coded, a large disparity between the system clock and the time encoded in the SMC will cause it to fail.

REO