A high-severity issue has occurred at the Power-On Self-Test (POST) phase which has resulted in the system BIOS to abruptly stop functioning.
I just updated the DELL R750 to the latest BIOS 1.6.5 from 1.5.5 and iDRAC 7.10.30.00 from 6.10.00.00. After reboot the server hangs on the Initializing Data Processing Unit
![](https://tomaskalabis.com/wordpress/wp-content/uploads/2024/06/Screenshot-2024-06-26-at-12.07.36-494x366.png)
![](https://tomaskalabis.com/wordpress/wp-content/uploads/2024/06/Screenshot-2024-06-26-at-12.09.28-494x109.png)
Follow my steps to solve this issue:
- Reboot server – did not work
- Cold boot of server – did not work
- Rollback BIOS to 1.5.5 – job failed
- Rollback iDRAC to 6.10.0.0 – job failed
- Go to the support DELL and insert your service tag of the server
- try to find the latest iDRAC with Lifecycle Controller – 7.10.50.0
- download – iDRAC-with-Lifecycle-Controller_Firmware_CX8MF_WN64_7.10.50.00_A00.EXE
- From the iDRAC go to the Maintenance Tab > System Update > Manual Update > Local and upload the downloaded package.
- Run the iDRAC update click to the „Install“
- Wait about the 5-10 minutes for the firmware update and reboot the iDRAC.
- After iDRAC reboot, try to reboot the server.
- NOW WORKING !
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