MrZoraman

I don't think Linus's target audience was people who are willing to install custom roms when he recommended getting an old phone off of ebay.

At the end, Linus recommended rescuing an older phone off of ebay. I don't know if I agree, since odds are those old phones are no longer receiving software/security updates. I wish Linus brought up that caveat.

@Robchil I was looking at other SFF cases online. Most of them have riser cables. A few of them had notes that said "If your card is a PCIE 4 card, make sure to change it to PCIE 3 in the bios". I tried doing that on my computer, and the fans work again! So! The solution to this entire thing was for me to go into my BIOS and change the PCIE slot from 4 to 3. That riser you linked is PCIE 4, I'm guessing the riser that came with my case many years ago is PCIE 3, so getting an upgraded riser is the fix. I wonder if it is worth the $60 to upgrade from PCIE 3 to PCIE 4 for a GPU...

The case is a silverstone ML08B. I originally bought it for a build containing an i7 6700k so it's a little old, but not too old (right?).

That was it!!! I'm using a small form factor case so there's a little PCIE riser part that bends 90 degrees. I plugged my GPU into the motherboard directly and... the fans are spinning!! Thank you so much for helping me troubleshoot this. I never in a million years would have guessed a faulty connection between my GPU and the Motherboard. Wow! My previous GPU probably didn't die then... just the PCIE riser thing... ah well I needed an upgrade anyways. But man.... where do I go from here... try to get a replacement riser, or a new case... that's a question for another thread. Thank you again for helping me out. You spent a lot of time helping me and I can't thank you enough!

I've hooked up everything to the AX850. No fans spinning

Why? The CPU is working just fine. I thought this was just to rule out the 4070 not getting enough juice. I gave it all the juice it could want by putting it on the big power supply, and the results didn't change.

@Robchil I tried doing the setup I described earlier, and the fans didn't spin up.

Could I leave the SF600 in my computer but just have my other computer with the AX650 right up against it and plug my graphics card into that PSU, and then turn both computers on at the same time? I figure if the GPU works and fans spin up and such, then we've narrowed it down to the SF600 being too weak.

The 4070 was able to full throttle on the SF600 (furmark stress test) with no stability problems, just no fans turned on. I guess I could swap PSUs as a test, that's going to be a massive amount of work....

The system that it doesn't work in is a Corsair SF600. The system that it does work in is a Corsair AX850.

My current system has a 600W PSU. I had an RX Vega 56 in this system beforehand and that draws more power than the 4070 as far as I know (higher TDP).

So, here's my problem now.... I have GPU A and GPU B, and Computer 1 and Computer 2. A + 1 = Fail A + 2 = Works B + 1 = Works B + 2 = Works It's just this one combination of computer and graphics card that doesn't work. I guess this rules out a hardware problem...

@rippy4500 @Robchil I just tried the GPU in another system.... and the fans work just fine. My bewilderment is immeasurable. Where do I go from here....

Could you please point me to some resources for how to do that? Will this void my warranty? Where would I even find the latest vbios for my card?

I installed several of MSI's tools, MSI Center, Dragon Center, Afterburner, etc... none of them could get the fans working. MSI's support for GPUs isn't open on weekends so I need to wait until Monday.

I used geforce experience to install the latest drivers. I used DDU again and put in a known working GPU and its fans are working fine so I don't think some other software on my computer is tampering with them. I haven't uninstalled anything other than the nvidia drivers.

DDU was used before installing the new GPU. The fan connectors look fine.

I just bought a new graphics card and the fans only spin when the computer is booting up. When I turn on my computer, the fans spin for a little bit, and then turn off. After that, they never turn on again. Even under heavy loads, my GPU is hitting 100C temps and the fans refuse to start up. I've tried setting up MSI Afterburner but the fan tab is entirely missing from the settings, and the fan control stuff is all grayed out. I tried a software called FanControl but it found like a dozen fans (I do not have a dozen fans), and none of them seem to turn on the GPU fans. I don't know what to do from here, any help is appreciated! Specs are attached below. PSU Wattage is 600W.

I reached out to MSI and they told me to return it to Amazon, so I guess I'll do that...

I tried it with no ram sticks at all plugged in, and got the exact same results.

Unfortunately I don't. I think I'm going to take it into a tech support place. Figured I'd try out here first though in case there was something I missed.

The backside of the CPU looked fine as well.

Reseating the CPU has not changed anything. Still getting the same behavior.

I did a visual inspection of the socket. No dirt, no bent pins.