Asrock z790 Taichi Carrara not booting in BIOS no HDMI signal

[Eyenstyn]

Just received Asrock z790 taichi from takealot today and after building pc, it wont post into bios.

No error codes displayed on debugger on motherboard. Previously was showing A6 related to SCSI.

Cleared CMOS. Tried only one RAM stick. Tried different monitors, display port and hdmi. No error codes on post. Previous was A6 related to SCSI but goes away upon restart.

Unable to do bios flashback as motherboard does not come with it.

 

[dainluke]

Which CPU do you own?

 

[Eyenstyn]

14700kf

Which CPU do you own?

 

[dainluke]

14700kf

I’m really glad I asked. Unfortunately you’re going to need a 12th/13th Gen chip to get your BIOS up-to-date. The Z790 Taichi Carrara stocked by TAL had a 7000MT/s DDR5 spec if you recall from the listing. Reason being that they got their stock last year when it was still geared towards 13th Gen. The board you received probably has a 2022 BIOS on it, if I had to guess.

 

[Eyenstyn]

Thanks I appreciate the help.

Is there perhaps anyone around Pta East, Centurion that perhaps has a 12th or 13th gen intel cpu to kickstart my pc?

 

[Toy Machine]

I am going through to PTA this weekend & have my 12th gen sitting here, will be around Mooikloof Spar & can possibly bring it back, but would need it back before end of weekend to take back with me.

 

[MinimumMaximum]

Just received Asrock z790 taichi from takealot today and after building pc, it wont post into bios.

No error codes displayed on debugger on motherboard. Previously was showing A6 related to SCSI.

Cleared CMOS. Tried only one RAM stick. Tried different monitors, display port and hdmi. No error codes on post. Previous was A6 related to SCSI but goes away upon restart.

Unable to do bios flashback as motherboard does not come with it.

are you using a gpu? if not, you wont get display because of the cpu you're using. no igpu

 

[Oj0]

I’m really glad I asked. Unfortunately you’re going to need a 12th/13th Gen chip to get your BIOS up-to-date. The Z790 Taichi Carrara stocked by TAL had a 7000MT/s DDR5 spec if you recall from the listing. Reason being that they got their stock last year when it was still geared towards 13th Gen. The board you received probably has a 2022 BIOS on it, if I had to guess.

Not necessarily. Eg, most of my boards are still listed as 128GB max, that doesn't mean the stock pre-dates the BIOS update for 192/256GB. It just means the listings don't get updated with every little change. An ASRock shipment came in very late last year.

@MinimumMaximum might be onto something though.

 

[dainluke]

Not necessarily. Eg, most of my boards are still listed as 128GB max, that doesn't mean the stock pre-dates the BIOS update for 192/256GB. It just means the listings don't get updated with every little change. An ASRock shipment came in very late last year.

@MinimumMaximum might be onto something though.

Taichi Carrara doesn’t have a DP I/O, and OP tested DP as well, so he’d have had to have been using a dedicated GPU. The issue OP described is characteristic of an incompatible BIOS rev.

Edit: the board could just be junk though.

 

[Eyenstyn]

Thanks @Toy Machine ! Was able to boot into BIOS after swapping with 12th gen CPU from a friend. I also tried different DDR5 5600Mhz memory to see if that resolved the issue. Flashed BIOS to the latest stable 11.08 but that didn't work. Tried the beta version 12.03 and that seems to work with 14th gen CPUs!

There was also sensitivity to how secure the AIO CPU cooler (Deepcool LT720) sat on the CPU, if it wasn't fully tightened with all 4 screws, then error codes 7F repeated in a cycle.

It came down to using the beta bios version, clearing CMOS afterwards and ensuring CPU cooler was secure. It turned out not to be RAM slot related.

Thanks everyone for your help!

 

[Eyenstyn]

Apparently I could have booted into the BIOS without a CPU installed and updated the BIOS

 

[dainluke]

Apparently I could have booted into the BIOS without a CPU installed and updated the BIOS

Uhm, yeah I don’t think that’s possible.

 

[Dr. Kraken]

Apparently I could have booted into the BIOS without a CPU installed and updated the BIOS

Not with this board specifically. Had it supported a function called BIOS Flashback, you could've updated the BIOS with no CPU in the socket using a designated USB slot on the board. Seems like AsRock did not add it to their Z790 boards