J3455-ITX no POST after BIOS update

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   Hello, I have just did update of BIOS of my J3455-ITX from 1.80 to the latest 1.90 version downloaded from official https://www.asrock.com/mb/Intel/J3455-ITX/index.asp#BIOS . I did update BIOS on this MB before and now I used the same process with using USB flash disk. I have activated Instant Flash process, the Progress bar processed to 100% and then I got message "Programming success, press ENTER to reboot system" and so I did.
After that monitor does not come up, only my fan started at higher RPM than usually and PowerON LED is ON (whch I had previously disabled in my BIOS config). I left this for about 10 minutes, no change.

So I did sequentially these steps, all with no effect:
- restart
- wait another 1 hour
- connect monitor using DVI, than also D-Sub
- turn off, disconnect from power, reset CMOS, connect power, turn ON
- turn off, disconnect from power, disconnect all disks, connect power, turn ON
- turn off, disconnect from power, disconnect one of two RAM modules, connect power, turn ON

I have run out of ideas.

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Bumerank Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: Yesterday Status: Offline Points: 15	Post Options Post Reply Quote Bumerank Report Post Thanks(0) Quote Reply Topic: J3455-ITX no POST after BIOS update Posted: Yesterday at 2:10am
	Hello, I have just did update of BIOS of my J3455-ITX from 1.80 to the latest 1.90 version downloaded from official https://www.asrock.com/mb/Intel/J3455-ITX/index.asp#BIOS . I did update BIOS on this MB before and now I used the same process with using USB flash disk. I have activated Instant Flash process, the Progress bar processed to 100% and then I got message "Programming success, press ENTER to reboot system" and so I did. After that monitor does not come up, only my fan started at higher RPM than usually and PowerON LED is ON (whch I had previously disabled in my BIOS config). I left this for about 10 minutes, no change. So I did sequentially these steps, all with no effect: - restart - wait another 1 hour - connect monitor using DVI, than also D-Sub - turn off, disconnect from power, reset CMOS, connect power, turn ON - turn off, disconnect from power, disconnect all disks, connect power, turn ON - turn off, disconnect from power, disconnect one of two RAM modules, connect power, turn ON I have run out of ideas.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 35453	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 18 hours 34 minutes ago at 8:21am
	The only suggestion I can offer is to disconnect power, pull the CMOS battery, clear CMOS and then leave the system like this over night. Don't forget to press and hold the power button once power is disconnected to discharge the capacitors fully. If that fails your only option is to open a support ticket with ASRock and hope that they can help you still with a board that is likely out of warranty. https://tw.asrock.com/events/tsd.asp