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- Excessive pre-OS delay at startup
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06-14-2019 10:22 AM - edited 06-17-2019 01:41 PM
My HP Z4 G4 takes 125 seconds before I can see the BIOS HP splash screen. This is occurring with and without a hard disk drive with an OS installed on it. As of today now, the BIOS version is up to date (P61 v01.75).
I have 2 others Z4 G4 of the same model and BIOS version and it takes 12 seconds before the logo appears; which seems is a normal delay to me
However, I doubt very much that the PC is defective, because I remember that the delay was normal before I changed some configurations.
I've reverted ALL of them to their initial value, but the problem persisted.
I've downgraded the BIOS version to an earlier one, but the problem hasn't disappeared. I've re-updated the BIOS to the most recent version, with the problem still present.
Next, I've Applied the Factory Defaults and Restored Security Settings to Factory Defaults from the BIOS to no avail.
Then I've replicated the setup of the functional PC to the problematic one. It didn't solved the problem.
I'm out of ideas...
Solved! Go to Solution.
Accepted Solutions
08-02-2019 06:53 AM - edited 08-02-2019 06:56 AM
I've opened a problem case at MyHPSupport.
A technician dispatched by HP came at my office: after multiple attemps at modifying the BIOS configuration, he finally replaced the motherboard.
06-17-2019 08:06 PM
long boot times are usually due to having the onboard nics configured to network boot and the onboard SAS/SCSI controller rom loaded when no bootable devices are attached
note that this is not the same as having a non bootable device attached and the boot rom disabled
also having the ssd installed and not configured as a boot device will also increase the boot time
i suspect the delay(s) are due to the system looking for a boot device and timing out on each device before moving to the next device in the boot order
make sure the bootable device is the first device listed in the boot order
06-18-2019 11:11 AM - edited 06-18-2019 11:13 AM
Thanks Dgroves for your answer.
I've disabled both network cards from the UEFI boot order (boot from legacy devices is disabled), but the delay is still present.
It has to be noted that this delay occur before the splash screen appears, so before any attempt to boot from any devices.
06-18-2019 12:21 PM
yes you do, please read the linked page of the service manual for your system, note the lines referring to the boot screen
https://www.manualslib.com/manual/1413132/Hp-Z4-G4.html?page=45#manual
08-02-2019 06:53 AM - edited 08-02-2019 06:56 AM
I've opened a problem case at MyHPSupport.
A technician dispatched by HP came at my office: after multiple attemps at modifying the BIOS configuration, he finally replaced the motherboard.
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