HP Z420 Bootup Lag and cold shutdown when update Bios

[Robert_Hind]

The latest bios problem:

1. During Boot there is about a 20 second delay with no video and then the fans come on full speed for a second or two and then the Workstation boots normally. All post messages are displayed and No Error messages are displayed.

2. When I turn off the computer it seems to be: cold shutdown

I was about the old bios (3.91) but the problem was not resolved.

Video could shutdown.

https://youtu.be/822eWoA_Z2w

Is it normal to turn off the computer?

[BambiBoomZ]

Robert_Hind,

Given the symptoms mentioned, the BIOS was corrupted during the update and needs to be reset.

First, try clearing CMOS by unplugging the system, pressing the power button, removing the CMOS battery for say 30 minutes and replacing. 

Let us know what happens and if clearing CMOS is not successful, there is a strong option, using the crisis jumper:

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

Do not try updating BIOS again using the same method.

BambiBoomZ

[Robert_Hind]

I tried flash bios by:

- Remove the CMOS battery 1 night
- Press the reset cmos button

- Flash bios in windows 10 and 7 (64 bit)

- Flash bios with usb in bios setting

However I found the problem unresolved. Did the latest bios make my bios error?

[BambiBoomZ]

Robert_Hind,

Yes, the BIOS update corrupted the BIOS through using the Windows technique.

You've been methodical and thorough such that the last alternative is to invoke the crisis recovery jumper and BIOS flash  using the BIOS BIN file  in a small partition (< 1GB) on a USB (see the link in the reply above). 

I used this method when I had a BIOS update (v3.91 to v3.92) failure on a z620 (E5-1680 v2). Following SDH's relayed and enhanced instructions carefully- and adding the small USB partition configuration,  I was successful on the first try. A lot of the successes I read about appear to rely on the timing of removing the USB. I had already replaced the motheboard, but the crisis jumper- which is not even mentioned in he z420 or z620 manual- but is mentioned in the z820 manual (!) restored the original motherboard to working- a life saver!

Let us know how you progress.

BambiBoomZ

[Robert_Hind]

I used the crisis jumper. -> flash done Bios version 3.91

But the shutdown is still the same. However, the shutdown is still the same (It has the sound of relay turned on). When I restarted, the computer turned off and turned on normally.