Z790 PG Riptide won't post i9-14900KF

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   I have built two identical systems:

Z790 PG Riptide (not wifi)
i9-14900KF
RTX 4000A graphics
Corsair DDR5 64GB
Sk Hynix M.2 drive
EVGA G6 850W PS

Both systems will boot with an older processor - i3-13100F.
I booted both into BIOS, updated the BIOS to 17.01 (latest).  Rebooted.  Shut down and cleared CMOS, rebooted - all good.

Both fail to post when I install the i9 processor.

When I try to power up, the fans spin up for about 1 second, the CPU light is on, and it immediately shuts down.

I believe this processor should work according to the ASROCK website.

I'm a bit stumped.

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99hank99 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Nov 2024 Status: Offline Points: 65	Post Options Post Reply Quote 99hank99 Report Post Thanks(0) Quote Reply Topic: Z790 PG Riptide won't post i9-14900KF Posted: 19 Nov 2024 at 1:54am
	I have built two identical systems: Z790 PG Riptide (not wifi) i9-14900KF RTX 4000A graphics Corsair DDR5 64GB Sk Hynix M.2 drive EVGA G6 850W PS Both systems will boot with an older processor - i3-13100F. I booted both into BIOS, updated the BIOS to 17.01 (latest). Rebooted. Shut down and cleared CMOS, rebooted - all good. Both fail to post when I install the i9 processor. When I try to power up, the fans spin up for about 1 second, the CPU light is on, and it immediately shuts down. I believe this processor should work according to the ASROCK website. I'm a bit stumped.

Wildcat445 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Dec 2024 Status: Offline Points: 60	Post Options Post Reply Quote Wildcat445 Report Post Thanks(0) Quote Reply Posted: 16 Dec 2024 at 12:10am
	I have the same issue. Just built a system with the Z790 Nova using the i9-14900KF CPU and it does the same thing--the computer turns on for half a second, "00" flashes on the error display, and then it shuts down. The LEDs on the board are glowing the whole time. I doubt our CPUs are bad. I don't have another LGA 1700 CPU to try (although I'd buy a known good, used older CPU just to see if that is the case). It's also a bit disturbing that after nearly a month, you've had no reply. (Did you try support directly? I haven't yet, but that's my next move.) I'm ready to drop this AsRock into the box and return it. It's the first time I've built a system in 23 years that didn't fire up immediately.

99hank99 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Nov 2024 Status: Offline Points: 65	Post Options Post Reply Quote 99hank99 Report Post Thanks(0) Quote Reply Posted: 16 Dec 2024 at 7:23am
	It's very weird. I have two of the processors, and two of the boards, and they both behave the same. I also have two Gigabyte z790 Aorus Elite AX boards, and both of them show the same behavior with the 14900kf CPUs. All four boards work with the i3 processor I had. I really needed to get something going, so I bought a i9-13900kf processor, and the the one board I tried it in worked fine (one of the z790 PG Riptides). So I'm wondering if I do have two bad processors. That seems so unlikely. I've ordered up a MSI Mag z790 Tomahawk max as from what I can find it is rated as one of the best i9-14900kf boards. If this fails, I'm going to say I've somehow gotten stuck with 2 bad processors, which are now I'm sure $500 paperweights as I don't have the packaging. Yes I contacted tech support - and I got a lot of generic FAQ type suggestions that ended with "send all your stuff back and get refunds". The whole experience has been a huge and frustrating waste of time and money.

Wildcat445 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Dec 2024 Status: Offline Points: 60	Post Options Post Reply Quote Wildcat445 Report Post Thanks(0) Quote Reply Posted: 16 Dec 2024 at 9:01pm
	Let us know what happens. If the new MB works, then we'll know that might be the problem. I checked NewEgg and Amazon and they have a lot of complaints about this chip. The 1-star reviews in both places are abnormally high, and while their chips worked, just about all of them complain about instability, and there was also a defect built into the chip due to overvoltage that Intel tried to fix with "microcode." Much as I dislike AMD chips (I've never used one that was 100% compatible with anything I've run--there were always issues), I might be forced to return this motherboard and the CPU and try to make an AMD system work. Next MB certainly won't be an Asrock either, and Asrock video card will be going back as well. I'm not keeping products from a company that won't support them with anything but generic, scripted answers.

99hank99 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Nov 2024 Status: Offline Points: 65	Post Options Post Reply Quote 99hank99 Report Post Thanks(0) Quote Reply Posted: 04 Jan 2025 at 3:44am
	Neither I9-14900kf processor will boot with the MSI board either. I think they're junk.

Wildcat445 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Dec 2024 Status: Offline Points: 60	Post Options Post Reply Quote Wildcat445 Report Post Thanks(0) Quote Reply Posted: 8 hours 19 minutes ago at 8:30am
	That's not encouraging and I agree--what are the odds of you getting two bad CPUs, and me getting a third one? I'm on the fence as to whether or not I send the board and CPU back for a refund, or buy an i9-13900KF and try that instead. I won't be using the onboard graphics, so I should be able to disable that in BIOS. I just don't want to have to return a second CPU. I'm just concerned this motherboard is a turd. Yet you had a highly-rated MSI that won't boot your two 14900Ks either. I inquired with a friend of mine who retired from Intel, and even he admitted that after all the problems I had, that I'd be better off ditching the board and CPU and going over to AMD. So, there's that.

99hank99 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Nov 2024 Status: Offline Points: 65	Post Options Post Reply Quote 99hank99 Report Post Thanks(0) Quote Reply Posted: 7 hours 48 minutes ago at 9:01am
	I also tried two Gigabyte boards, so I tried a total of 5 boards across 3 brands on the two processors. I sent the MSI board back - it had a bad RAM socket, but it would work boot with 1 stick and ran with both the I3 and I9-13900 processors. As of now, both Gigabyte boards are running with I7-14700KF processors and both Asrock boards are running with I9-13900KF processors. I was outside the Amazon return window on the processors so I started the warranty process with Intel and they've been surprisingly responsive. It's sounding like they are admitting bad processors and will refund me.

Wildcat445 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Dec 2024 Status: Offline Points: 60	Post Options Post Reply Quote Wildcat445 Report Post Thanks(0) Quote Reply Posted: 6 hours 59 minutes ago at 9:50am
	That's good to know. My return is Amazon eligible until Jan 31, but rather than risk having my Amazon account closed, I might give the Intel warranty a try. (It's one thing to return a $20 vs. one that cost around $450.) I did just order the i9-13900KF (noticing it has a much higher rating), and it will be here tomorrow morning. Fingers crossed this will work! (With your positive success, I'm hoping I have the same.) I'll report back with what I find.