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  1. #1
    ROG Guru: White Belt Array
    Join Date
    Dec 2014

    Exclamation Z590 Maximus 13 Apex no boot with latest BIOS (code 99)

    Recently I've updated motherboard bios from 1301 to 1402 and motherboard not boot. Post code shows 99 with green led and Asus ROG logo on monitor screen. Also I can't enter the bios, keyboard is not reacting and it looks like a system hang. I had 2 or 3 successful boots, it took a while. I just waited and motherboard started to boot into Windows after 2-3 minutes. I've tried to load optimised defaults but no difference. Even CMOS reset is not helps. Some users mentioned that code 99 on Asus boards might be keyboard or mouse related but after unplugging it's still a code 99.
    If I use bios flashback and flash bios 1301 then seems like everything is fine (I believe, I got this particular board only 2 days ago). Factory bios 0506 from 2nd bios ROM boots fine too.
    Any advice?

    System specs are:

    Arctic Liquid Freezer II 360
    Z590 Maximus XIII Apex
    Kingston KF436C16RB1K2/32
    Gigabyte GTX 1660 Super Gaming OC
    EVGA SuperNOVA 1000 P2
    Samsung 980 PRO 500GB (Windows)
    Goodram IR-SSDPR-P34B-01T-80 1TB
    Windows 10
    LG 27GL650F

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