Question 4090 not posting or appearing in bios/device manager

[Unfancy]

I have slotted a ASUS TUF 4090 OG OC 24gb into my system and on boot it will not appear in bios nor will it appear in device manager. I cleared my CMOS battery to reset bios, re-seated + reallocated power to the card. This system was previously running a 2070 super functioning just before the swap.

Notes:
Build - PCPartPicker
When the computer is off, a red light on the card indicates that it's not receiving power, this goes away when booting + running the system.
The RGB/Colors are functioning on the card
The fans are NOT spinning during bootup or use
The card is not appearing in bios, device manager or dxdiag
I heard not to daisy chain the connections, so I have three individual pci-e cables connected to my power supply and the last one is daisy chained as I researched that was okay.

(Expert cable explanation for power)

I did buy this secondhand what was seemingly a good deal so I'm currently assuming good faith in assuming that the error for this card is on my end before I contact the seller. Also warranty for the serial is still valid through ASUS when I checked. I'm praying the interior wasn't scrapped or something crazy. The card was claimed unused for a build they planned on doing but needed money instead.

 

[boju]

Im assuming the Corsair Rmx unit is the older version (new version has native 16pin), that doesn't matter though, can buy 2x 8pin 16pin 12vhpwr adapter instead of a bird nest of cables and rule out something wrong with the adapter that came with the card.

12VHPWR Cable | 600W PCIe 5.0 Power Adapter Cable

The official CORSAIR 600W PCIe 5.0 / Gen 5 12VHPWR PSU Power Cable delivers power from CORSAIR Type-4 PSUs to the most advanced PCIe 5.0 graphics cards.

www.corsair.com

If there is something wrong with the card, at least you'll have a quality cable from Corsair for the next card /replacement you get.

 

[QyInvoLing]

There're a lot of 4090F(yes, without GPU Core and VRAM, only pcb and cooler) on second-hand market for about 10-20$. Months ago there was a news that someone in Hong Kong bough a second-handed 4090 for the same amount of money of 4090 and got a 4090f.
Contact ASUS immediately for warranty and ASUS will tell you if it's a true 4090 .

 

[Unfancy]

There're a lot of 4090F(yes, without GPU Core and VRAM, only pcb and cooler) on second-hand market for about 10-20$. Months ago there was a news that someone in Hong Kong bough a second-handed 4090 for the same amount of money of 4090 and got a 4090f.
Contact ASUS immediately for warranty and ASUS will tell you if it's a true 4090 .

I checked the serial through ASUS and it does say under warranty, I will give them a call today about it.

Im assuming the Corsair Rmx unit is the older version (new version has native 16pin), that doesn't matter though, can buy 2x 8pin 16pin 12vhpwr adapter instead of a bird nest of cables and rule out something wrong with the adapter that came with the card.

12VHPWR Cable | 600W PCIe 5.0 Power Adapter Cable

The official CORSAIR 600W PCIe 5.0 / Gen 5 12VHPWR PSU Power Cable delivers power from CORSAIR Type-4 PSUs to the most advanced PCIe 5.0 graphics cards.

www.corsair.com

If there is something wrong with the card, at least you'll have a quality cable from Corsair for the next card /replacement you get.

Alternatively if 1000 isn’t enough for all the leds/gpu/cpu should I just purchase a new 1300w+ with the 12vhpwr adapter to rule out power supply issues? I want to make sure I can diagnose this completely within my timeframe to refund if needed

 

[boju]

If you have time to rma psu for newer version then why not but this wouldn't be the sole reason the gpu isn't working, not the psu at least. That adapter / or fake card is also there abouts.

 

[drivinfast247]

Try without the PCI-E riser cable.

 

[beyondlogic]

I have slotted a ASUS TUF 4090 OG OC 24gb into my system and on boot it will not appear in bios nor will it appear in device manager. I cleared my CMOS battery to reset bios, re-seated + reallocated power to the card. This system was previously running a 2070 super functioning just before the swap.

Notes:
Build - PCPartPicker
When the computer is off, a red light on the card indicates that it's not receiving power, this goes away when booting + running the system.
The RGB/Colors are functioning on the card
The fans are NOT spinning during bootup or use
The card is not appearing in bios, device manager or dxdiag
I heard not to daisy chain the connections, so I have three individual pci-e cables connected to my power supply and the last one is daisy chained as I researched that was okay.

(Expert cable explanation for power)

I did buy this secondhand what was seemingly a good deal so I'm currently assuming good faith in assuming that the error for this card is on my end before I contact the seller. Also warranty for the serial is still valid through ASUS when I checked. I'm praying the interior wasn't scrapped or something crazy. The card was claimed unused for a build they planned on doing but needed money instead.

.first point of call would be to slot it directly into the motherboard.

This eliminates the riser as a fault if it doesn't post.

The adapters of the 4090 have been known to be pure trash. And been a quality issue a while

Also the recommendation would to run 4 separate cables of PCI e not 3.

This is just a cleaner power delivery method each cable handles standard about 250w.

The Corsair cable is decent . And much better but I'd try loaded the PSU over 4 pcie first

 

[Unfancy]

I’ll try 4 pci-e today as well and slot it into the motherboard if it fits my case. I won’t have to worry about sag if it’s temporary will I?

.first point of call would be to slot it directly into the motherboard.

This eliminates the riser as a fault if it doesn't post.

The adapters of the 4090 have been known to be pure trash. And been a quality issue a while

Also the recommendation would to run 4 separate cables of PCI e not 3.

This is just a cleaner power delivery method each cable handles standard about 250w.

The Corsair cable is decent . And much better but I'd try loaded the PSU over 4 pcie first

 

[drivinfast247]

I’ll try 4 pci-e today as well and slot it into the motherboard if it fits my case. I won’t have to worry about sag if it’s temporary will I?

I personally would try to support the GPU any way I could. A cut to size pencil, Legos, a toy/action figure. Anything to keep some weight off the slot.

 

[beyondlogic]

Just put the case on its side when your testing it that will eliminate sagging of any kind.

Yeah if it's a power issue

4 pcie cables should work.

 

[Unfancy]

If you have time to rma psu for newer version then why not but this wouldn't be the sole reason the gpu isn't working, not the psu at least. That adapter / or fake card is also there abouts.

Try without the PCI-E riser cable.

.first point of call would be to slot it directly into the motherboard.

This eliminates the riser as a fault if it doesn't post.

The adapters of the 4090 have been known to be pure trash. And been a quality issue a while

Also the recommendation would to run 4 separate cables of PCI e not 3.

This is just a cleaner power delivery method each cable handles standard about 250w.

The Corsair cable is decent . And much better but I'd try loaded the PSU over 4 pcie first

Just put the case on its side when your testing it that will eliminate sagging of any kind.

Yeah if it's a power issue

4 pcie cables should work.

I am unable to use the direct PCI-E on the motherboard, the card conflicts with the Y60 outer shell making an impossible mounting angle for a card this size I think.

The PCI-E riser was functioning with the 2070 just before installation though, though maybe the weight of this card causes issues?

I did however use 4 direct PCI-E cables from the PSU and again no fans were spinning but RGB was active.

Lastly; the serial is valid and purchased in August/September of this year, which means they’ll allow me to RMA the card/cable. This means it would be a 10 day process which would give me the time to charge back if necessary. I’m thinking I send it in because if there is anything scrapped or wrong they can let me know, and if it functions for them then it will 100% be on my end.

 

[beyondlogic]

I am unable to use the direct PCI-E on the motherboard, the card conflicts with the Y60 outer shell making an impossible mounting angle for a card this size I think.

The PCI-E riser was functioning with the 2070 just before installation though, though maybe the weight of this card causes issues?

I did however use 4 direct PCI-E cables from the PSU and again no fans were spinning but RGB was active.

Lastly; the serial is valid and purchased in August/September of this year, which means they’ll allow me to RMA the card/cable. This means it would be a 10 day process which would give me the time to charge back if necessary. I’m thinking I send it in because if there is anything scrapped or wrong they can let me know, and if it functions for them then it will 100% be on my end.

Remount the 16 pin adapter into the card it sounds like now that the RGB works it might post. Don't always expect fan spin as it normally won't spin unless under a significant load.

Make sure the adapter is not bending.

Bending the adapter can cause damage.

Also judging by the photo again after zooming in it looks like it's not in properly.

Reseat the adapter and it should make a click if it's locked in right.

https://www.techpowerup.com/300229/...-12vhpwr-for-cable-management-it-will-burn-up