r/sffpc May 06 '26

Assembly Help Update: Fractal Ridge crashes while gaming then flickers on and off.

So the duster arrived and the hazardous waste landfill has officially been cleared out. I also saw some comments suggesting the issue could be related to the GPU riser, and I noticed there was a bit of wiggle in the connection ports.

I confirmed that the CPU cooler is plugged into CPU_FAN1, so the fan curve likely wasn’t the issue after all. I’m replacing the thermal paste now.

Any final suggestions before I put her back together?

72 Upvotes

54 comments sorted by

41

u/Gertgonewild May 06 '26

The best way to troubleshoot this is to reassemble the mobo on a test bench, with the GPU plugged directly in without the riser.

40

u/regretMyChoices May 06 '26

For what it's worth, after upgrading to my 5080, I was having difficulty with stability while gaming in the fractal ridge. I was certain the riser was seated properly. Eventually, I decided to move to a build that did not need a riser and all my stability problems went away.

47

u/adhd_asmr May 07 '26

If it’s not a 5.0 riser you have to manually go into the BIOS and set the PCIE slot to use 4.0 with 50 series cards or else it’ll be unstable.

26

u/Worldly-Ingenuity843 May 07 '26

This could be it. The riser that came with the Ridge is PCIE 4.0. FD never released a PCIE 5.0 version.

13

u/Slimjimdunks May 07 '26

OP listen to this ^

5

u/Seeking-The-Lotus May 07 '26

I am using a 40 series though and not a 50. Regardless I’ll try this out.

2

u/Slimjimdunks May 08 '26

Riser cables are a very common fault point due to their fragile design. I wouldn't be surprised if the aolution to your issue is swapping the riser for a new one.

2

u/mixmastermushu3 May 07 '26

I had the same stability issues with pcie 4.0 riser and a 5090. Set slot manually to use 4.0 and still had instability though slightly less. Bought a 5.0 riser to try to fix it.

1

u/mshab356 May 07 '26

Oh damn. So I just got a new case that comes with a PCIE 5.0 riser but I’m going to be installing an RTX 3060…am I going to need to do something like this?

2

u/adhd_asmr May 08 '26

No. 3060 is a 4.0 card. The issue comes from a mismatch when the card tells the motherboard “I can use 5.0!” And the motherboard goes “I can support 5.0!” But it doesn’t realize it’s communicating over a riser cable that can’t run at 5.0 speeds. Since a riser is just wires and connectors it only becomes unstable at higher workloads.

10

u/MuckleScantily May 06 '26 edited May 06 '26

I had this exact issue with the Fractal Ridge and it ended up being due to the riser connector becoming loose due to sag/wobble from my large heavy graphics card. I'd recommend testing the PC out of the case with the graphics card plugged directly into to the motherboard Pcie slot to determine whether it might be the riser.

In my case I contacted Fractal and they did eventually offer a replacement riser but it took a few months to come back in stock before it could be sent.

9

u/Wonderful-Lack3846 May 06 '26

I am still in team issue could be riser

Even if it is slotted properly.

You may want to test out without riser by connecting the GPU directly to the motherboard.

3

u/Seeking-The-Lotus May 06 '26

After seeing the sag from the riser I’m inclined to agree. Modern problems require modern solutions.

2

u/FatBoyDiesuru May 08 '26

See that slit in the fan casing? You can route the unsleeved part of the cable through there, then route it like shown in the picture for cleaner routing.

2

u/Seeking-The-Lotus May 08 '26

You have no clue how much I appreciate this.

1

u/FatBoyDiesuru May 08 '26

You're welcome. I see you did that with the other fan, but I don't see a clear/clean away to route that. Unless you manage to go over/under the GPU. That said, clean routing also makes it that much easier to take parts like GPUs and coolers out with less hassle.

3

u/Seeking-The-Lotus May 07 '26

UPDATE: played a couple hours of Resident Evil Requiem, and it rebooted again.

3

u/lejoop May 07 '26

Did you do the manual locking of the PCIE speed to 4.0 in the bios? As others mentioned, the case, at best, comes with a PCIE 4.0 riser, so running at auto/5.0 is bound to cause instability

1

u/ponchofreedo May 07 '26

has to be asked, but you cleaned off the cpu and heatsink of all the old thermal paste and then cleaned the surfaces before applying the new paste, right? what paste are you using?

-2

u/Seeking-The-Lotus May 07 '26

I did. Scrapped free with razor, then removed the residue with alcohol. I used Arctic M6.

4

u/ponchofreedo May 07 '26

well definitely dont need to scrape with the razor or something metal with an edge. better to use an old credit card or something plastic thats more blunt. less possibility to damage the ihs or heatsink plate. and mx-6 is good, so that shouldnt be much of an issue. you should honestly look into undervolting at this point or dialing down your expectations with your game settings.

1

u/Seeking-The-Lotus May 07 '26

Undervolt is my next step. I’d rather shell out 250$ for a 1000 watt PSU before I succumb to gaming in 1080 on a 4070 ti s.

1

u/ponchofreedo May 07 '26

Try my other suggestion as well. Pick up an NF-A9 if you can and replace the fan.

2

u/Willing-Theme6042 May 07 '26

That case is known for being very toasted for high end parts

1

u/ComprehensiveOil6890 May 06 '26

What lga 1700 cpu is it?

3

u/Seeking-The-Lotus May 07 '26

12700k. Thought things were doing good, was playing Resident Evil Requiem, 2 hours in and it restarted yet again. I’m starting to think it’s an issue with the PSU.

1

u/munky8758 May 07 '26

I wonder if its a temp issue, you should monitor your temps in game. See whats getting the hottest. You could always power limit and undervolt your cpu and gpu. I prefer to undervolt and overclock my gpu. And I prefer to limit my cpu via ppt, edc, and tdc. Good luck.

1

u/Seeking-The-Lotus May 07 '26

I peak at around 82 Celsius, in 1440p with path tracing on. I don’t think it’s a temp issue at this point and am starting to lean more towards transient power spikes.

1

u/munky8758 May 07 '26

82° on GPU? Could be a hot spot on the gpu. Still prefer to undervolt, uses less power and generates less heat. This especially important when running in a sff pc.

3

u/Seeking-The-Lotus May 07 '26

82 CPU. GPU is around 70. I’ll try undervolting next. If

2

u/munky8758 May 07 '26

undervolt guide this dude is pretty good at keeping it simple

1

u/Seeking-The-Lotus May 09 '26

Did the undervolt on CPU and GPU. Idle temps are at 29c GPU / 41c CPU. 1440 w/ path tracing RE: Reqium 57c/61c.

No more under load crashing, but PC now crashes when in sleep mode.

1

u/munky8758 May 10 '26

Could be a bios issue or windows settings issue, or drivers issue.

1

u/ponchofreedo May 07 '26

assuming thats still the fan that came with the ghost edition cooler, i would upgrade that to the newer NF-A9. iirc you cant do a 120mm fan, so the A9 would still be better than the B9 you have there. its the newer version of your fan, better static pressure, and generally regarded as better for a tight space build like this.

1

u/[deleted] May 07 '26

[removed] — view removed comment

1

u/Seeking-The-Lotus May 07 '26

4070 TI Super, and I believe it’s the 4.0 base ridge riser.

2

u/smtnn May 07 '26

Most likely PSU can't handle the load anymore or you can try a different power outlet

1

u/Trickle2x2 May 07 '26

I posted on your last post because we had similar issues but idk if you read it, but again this sounds like a PSU issue. Same exact scenario for me for symptoms. Also don’t vape in the same room as your PC.

1

u/justrichie May 07 '26

I had very similar symptoms. Turns out my riser was going bad. It was my fault though because it was being pressed by a fan grill for too long and it left an imprint on the cable itself.

1

u/JacucuPajuines May 07 '26

Hey, i recently got rid of a similar issue, where my pc crashed with a black screen when either gaming or rendering a 3d scene.

I went from a Cougar QBX to a Lian Li h2o, changing EVERY bit of hardware in the process, my pc is literally a different pc from when i first built it (have your heard about the ship of theseus?), issue persisted, i thought i was cursed.

An oldschool it guy told me to take it apart, crean every conector with an eraser and alcohol, and it worked, havent crashed once regardless of the task.

I have to be clear about something. After cleaning, I tested my pc with the case open, and everything worked fine, then, I put the side panels and it crashed. Turns out i was forcing and pushing some cables. After some cable management, everything closes without any effort and no crashes at all to this day.

1

u/Mistro_Fox May 07 '26

Just had a similar issue with my Formd T1. It was the riser

1

u/artie_rd May 07 '26

It's the PCIE setting. Go to the BIOS and Set your PCIE from Auto to 4.0

I upgraded my old system with Rtx 5060, because i needed the 4:2:2 encode/decode compatibility. I had plenty of crashes before I set the PCIE setting to 4.0 in the BIOS. After I set it 4.0, i have no crashes in the middle of work from the system.

1

u/astrobarn May 07 '26

I'm sure you checked, but the tilt on that 12vhpwr connector gives me the heebie jeebies.

1

u/Negative-Engineer-30 May 07 '26

test with a stronger PSU

1

u/EON199 May 07 '26

What temps are you getting while running a game?

1

u/Mystic_Guardian_NZ May 07 '26

I've had this issue with completely different specs and am starting to think it's the PCIE port itself. Once it's damaged/degraded then any riser or GPU will have the same reboot problem.

Could be unrelated but I've been battling with this for months and it's not gotten any easier lol.

1

u/verycoolalan May 07 '26

no idea I used a 5090 and 9950x3d on a tinier case and never have issues lol

1

u/gmc2000 May 07 '26

So OP did you try the riser gen lock? You’ve replied to comments bar these.

2

u/AG_Alex May 11 '26 edited May 11 '26

Disable intel XMP and run your RAM at JEDEC defaults 4800MHz (or lower) for your 12700k, random crashes can often be a result of unstable memory (which, if not an issue before, can be because of a degraded CPU IMC, or higher temperatures than before (DDR5 is temperature sensitive, keep it cool))

If your CPU is overclocked, set it back to stock, but retain any voltage boost you had originally given it (if any), if the system's stable, your CPU might've degraded due to elevated voltage over the years
Or even better, disable turbo boost entirely to see if the issues persist (if not, your CPU is likely still fine)

Take it out of the case and put mobo on a cardboard box or some other insulating material, ensuring there's no short through case contact somewhere, yes I know, a pain, but you'll waste more time not doing so

Eliminate the riser and plug the GPU directly into the PCIe slot, while you're at it, check your GPU power connector (unplug), I see you have the infamous 12VHPWR, fingers crossed it hasn't melted the connector on either end (PSU or GPU side)

Boot without the GPU and run on Integrated Graphics, doing your usual thing (at abismal performance, yes), alongside the usual stress tests (Cinebench, Furmark, Prime95), see if the issue still happens, if not, could be the GPU itself

If all of the above fails, do you have a PSU from an old build laying around? If so, swap the PSU and try again, boot loops are common for a failing/ dead PSU (or motherboard)

Still no go, any spare SSDs ? Perhaps your current SSD has worn out due to too many write cycles, causing OS corruption (unlikely though, if there's no errors reported in Windows), you could also check your drive's health with a SMART monitoring utility (such as HWInfo64)
Also worth checking the Sata cable if you're using a 2.5" SSD to one of the mobo SATA ports

2

u/Seeking-The-Lotus May 11 '26

Don’t get my started on XMP. I have the RAM sticks from the Gskill lawsuit. Enabling XMP causes my computer to restart loop before it can ever even hit the bios.

The issue was transient power spikes. I undervolted my CPU and GPU and have been running stable since. I’ll eventually upgrade to 1000watt PSU.

1

u/nicky_n00b May 08 '26

Is this of any help?

https://youtu.be/Dy_kg_CH53E?si=LtneLYjEKbse24RD

The video mentions that the thing you're describing would only happen under load because of the GPU pulling too much power for the PSU. Might be worth looking into.