HP prodesk 600 G2 - VERY long BIOS boot time

[Blazej222]

Hi. I own HP prodesk 600 G2 with BIOS N22 Ver.02.56 .

It takes about 4 minutes before the BIOS starts booting the system up.

I am certain this is a BIOS issue, because after powering the device on it takes about 2 minutes before HP logo shows on the screen, and another 2 minutes before the system starts booting (the animation begins).

When I want to enter BIOS settings, I press escape button when powering on the device and it enters BIOS settings about 3 minutes later.

I've tried enabling/disabling Fast Boot, booting with legacy or UEFI modes, with HDD SATA and M2 SSD drive, and nothing seems to help, this issue persists.

Thanks in advance for any help.

[DGroves]

a long delay can be from doing a extended memory check or searching all devices in order till a bootable one is found

set cmos back to FACTORY SETTINGS and save, do not modify anything test and see if boot speed is normal if so

enter bios and only make one or two changes in the first menu tab, save and retest continue this until finished or problem occurs, if problem roll back changes and research just what those bios settings actually do instead of guessing

[Blazej222 · Accepted solution]

After a very long time, I finally had time to look into this. Turns out HP BIOS doesn't like my USB mouse.

I did some tests and everything works as it should when I disconnect my USB mouse from the computer.

Even funnier thing is, it seems that the BIOS doesn't like this particular USB mouse - when I connected another one it works fine.

Thanks for help and tips.