Invalid serial number

[Alexis_lmr]

Hello,

Following a bios upgrade, parameters such as serial number, MAC address etc have been deleted.

I tried to rewrite them via BCU but I got an "Access Denied" error message

Tests carried out:

- Addition of a password for bios access (did not change anything)

- Modify the position of the jumper on the motherboard in all possible places (has not changed anything)

[BambiBoomZ]

Alexis_Imr,

A first and easy approach to a corrupted BIOS is to remove the CR2023 CMOS battery for an hour and that may - we hope- clear the CMOS to it's original configuration.

If that doesn't work, the next approach would be to reflash the BIO using a sub-1GB FAT32 partition on a USB 2.0  Flash Drive- or a USB 3.0 drive in the USB 2.0 USB port nearest the motherboard.

0. Before doing anything, ensure that the new BIOS does not require an intermediate BIOS upgrade.  These are made-up numbers, but for example, say the system was running on "v. 1.2" and the latest version is "v. 3.69".  It's not a certainty, but it's possible that the system would have to be first upgraded to "v 2.34" before it can then run on "V. 3.69."

1. Extract the *.bin file from the HP BIOS for your system and copy into the root directory of the drive- not into a folder.

2. Remove all drives and disks from the system and

3. Make sure that any M/B jumpers are in their original positions.

4. With the BIOS- loaded drive in the USB 2.0 port, start the system. 

5. If all goes well, there will be a start menu that offers the the choice to reflash the BIOS.

6. Selecting that will reboot the system and flash the BIOS.

I hope others will comment if something is omitted or incorrect in this description and/or sequence.

Let us know what happens.

BambiBoomZ

HP z620_2 (2017) (R9) > Xeon E5-1650 v2 (6C@ 4.6GHz) / z420 Liquid Cooling / 64GB (HP/Samsung 8X 8GB DDR3-1866 ECC registered) /GTX 1070 Ti 8GB / Samsung SM951 M.2 512GB AHCI + Samsung 970 EVO M.2 NVMe 500GB + HP/HGST Enterprise 6TB / Focusrite Scarlett 2i4 sound interface + 2X Mackie MR824 / 825W PSU / Windows 7 Prof.’l 64-bit (HP OEM) > 2X Dell Ultrasharp U2715H (2560 X 1440)
[ Passmark Rating = 6412 / CPU rating = 16283 / 2D = 846 / 3D= 13735 / Mem = 3107 / Disk = 14614 / Single Thread Mark = 2550 [7.3.21]

HP z420_3: (2015) (R12) Xeon E5-1650 v2 (6C@ 4.6GHz) / z420 Liquid cooling / 64GB (HP/Samsung 8X 8GB DDR3-1866 ECC registered) / NVIDIA GeForce GTX 1060 6GB/ Samsung SM951 M.2 256GB AHCI + Samsung 860 EVO 500GB + HGST 7K6000 4TB / ASUS Essence STX + Logitech z2300 2.1 / 600W PSU > Windows 7 Professional 64-bit (HP OEM ) > Samsung 40" 4K
[Passmark System Rating: = 6186 / CPU = 15845 / 2D = 819 / 3D = 11216 / Mem = 3047 Disk = 13905 /Single Thread Mark = 2525 [7.3.21]