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Maximus IV Extreme-Z after update BIOS, no boot

theweis
Level 7
Hello all,
I did a search and nothing seemed to match my situation directly, so forgive please if this is a repeat.

Finally got around to updating BIOS from original 0403 to latest version.
Used AI Tuner to update from a file 9didn't seem to be able to update over internet).
All indications were that it was successful, did a reboot, it POSTed, and subsequent reboots fail.

Failure is power on, fans run for 3-4 seconds, then machine powers down, fans turn back on for 3-4 seconds, powers off, rinse/repeat until i have to manually hold power button down to shut down.

No screens pop up, no ability to drop into BIOS etc.

Any help/advice appreciated.
Thanks
P
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2 REPLIES 2

theweis
Level 7
No one replied, but I figured it out, thought I would post the very simple solution.
There is a BIOS SWITCH button on lower right corner of the mobo.
I pressed it, LED indicated a change, PC booted.
That's it.

Motion2082
Level 7
Thanks for sharing, had the same problem as you 🙂 all fixed now