System disabled code for forgotten BIOS password on HP 635

Question

System disabled code for forgotten BIOS password on a HP 635
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Answer 1

Hi, If your machine is producing a hexadecimal halt code, this would indicate it has a more recent AMI bios, in which case, you only have two options at the moment.
1. Contact HP and see if they can help with an unlock code - start Here.
2. It would appear that the hash is not stored in nvram and that removing the cmos cell, holding down the power button for a minute, then leaving it for a couple of hours before re-assembly will actually clear the password - the bad news if you wish to try this is that the cell is on the wrong side of the system board - see Page 127 of your Maintenance & Service Guide.
Regards,
DP-K