HP Z820 双路X79工作站主板通过肋手升级BIOS黑屏，强行关机后，开机不断重启如何修复？

[jakeytan]

HP Z820 双路X79工作站通过助手升级BIOS黑屏，强行关机后，开机不断重启。如何修复？

[y2kim · Accepted solution]

中文没有人分享过。英文的社区有。

https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/Crisis-Recovery-Ju...

[莫启坚]

最后升级成功没，成功的话回滚一下BIOS。

[jakeytan]

谢谢，晚上试下。

[jakeytan]

Steps to attempt to recover BIOS:
1. Power off system and unplug power cable.
2. Remove side panel and locate "Boot Block Recovery Jumper" on side panel label.
3. The jumper will be on a 3 pin header where 2 of the 3 pins will be loaded by the jumper.
a. On the Z840 load the jumper on the 2 pins towards the front of the chassis.
b. On the Z440 and Z640 load the jumper on the 2 pins towards the rear of the chassis.
4. On a USB key (preferred format FAT32), with a built in LED to show activity, place the .bin file of BIOS version 2.20 or later install on the root directory.
5. Install the USB key onto the failing system, insert power and press power button.
6. When the system is powered on it should be followed by 8 beep audio code. Disregard this as this is normal behavior.
7. The USB key activity LED will begin to blink slowly then rapidly in most situations. This process will occur twice.
8. If BIOS Recovery is successful, the display will show a BIOS Recovery screen with the update in process. "Don't shut off power at this state."
9. When install is complete, the system will power off.
10. At this point unplug the power cable and USB key.
11. Return the Boot Block Recovery jumper to its original location. Replace side panel.
12. Insert power cable and press the power button. The system will come up with a black screen and shut off once, then power on by itself again and if successful the BIOS post will appear.
*If recovery steps unsuccessful replace system board.

[jakeytan]

"引导块恢复跳线"找不到在哪都是两针的，没看见有三针的。

[jakeytan]

usb key更不知是什么东东。编程器吗？

[y2kim]

USB key是U盘

跳线位置，看机箱盖板内侧图例，一些必要的位置会标记出来

[jakeytan]

ME/AMT Flash override 就这一个了。没针。两个焊点在右下角

[jakeytan]

还有在cpu0电源位置 有三个针脚的东东。