HP Z840 Workstation Not Post on Boot

[nasnas]

Hello Hp Support Team
i have a HP Z840 workstation , after trying to Updating the Bios From UEFI Bios Ethernet Mode , the Update Issue , after rebooting the Machine No Post no display and no keyboard signale ,then after 10 min all Fan increase to 100%.

i do a clear Cmos , i remove the battery , Also i try to do BBR (Boot Block Recovery) ,  i put the jumper to the 02 pin to the front panel side , i put a last version of Bios (V02.57) on a empty USB formated FAT32 ,i have 08 Bips on Boot  , nothing change After

Please it's emergancy ,we have a work in progress on it,     need your support to resolve this problem

Best

[itsmyname]

@nasnas -- emergency

Remove the disk-drive from the computer, and attach it as a "secondary" disk-drive in some other computer.

Copy the files from that disk-drive onto the "primary" disk-drive, and resume working with the files.