GPU not detected by motherboard

[DezMurph]

Having issues with my new GPU not being detected by the motherboar,
System is
RTX 3080 strix
ASUS ROG Strix Z390-E motherboard
I7 9700k 8 cores 8 threads
PSU HX750i Corsair
32 GB Corsair RAM 3200

Ran DDU and uninstalled old drivers, fitted new 3080 Strix and the motherboard will not detected it, checked display adapters shows nothing but motherboard graphics also checked hidden options, checked BIOS and nothing detected in slot 1, removed card and re seated 3080 a few times to check it’s fitted correctly, removed card and fitted 1080 back into slot motherboard found it strait away, with the 3080 in my computer won’t let me download any Nvidia drivers as the install says error no Nvidia components detected, I’m stuck and out of ideas of how to fix only other option is maybe the card is faulty any help would be much appreciated.

 

[DezMurph]

No unfortunately I don’t, I mean the card lights up the fans all spin looks like it works, the card has a performance/quiet switch on it

 

[DezMurph]

So tried the other switch changed from performance too quiet and still nothing, computer currently has no Nvidia drivers on it at all, would it be worth putting my 1080 back in installing all the drivers Nvidia experience an then swapping again and downloading new drivers for the 3080?

 

[DezMurph]

if it works with quiet switch, you can always update it to performance bios, presuming its a 2nd hand card, or if me, i would go back to seller, though if new would rma it asap

Sorry not sure what you mean by rma?

 

[DezMurph]

And yes the card is brand new

 

[DezMurph]

How is the power connected to the GPU? How many PCIE power sockets on the card? 2? At they both connected to the PSU? ideally with separate cables.

It’s got 3 PCIE sockets and Iv connected it with 3 PCIe type 3 cables that came with Corsair power supply, so they are the ones with the daisy chain but I’m not using that part just the main plug

 

[DezMurph]

the z390 fully updated, as above with pcie cables, check seated correctly and using 2 not daisy chain(ie 1 cable from psu for all connectors)

It’s fully updated, I haven’t flashed the BIOS though but the board is only 18 months old or so

 

[DezMurph]

few other things to try, cmos reset, try another pcie slot to test other question what version windows you running, im sure i read somewhere pre 20h2 had some issues with 3080

Yeah updated windows and currently have 20h2

 

[DezMurph]

Ok will give that a go, do you have to use a USB drive to do this? Or can I just download the file onto my computer then pull the BIOS up and locate the save file

 

[DezMurph]

i always do usb , its just habit i use usb since owning pc's, but your choice ,as over internet is probs easier, but never tried it, stick with what i know

i always do usb , its just habit i use usb since owning pc's, but your choice ,as over internet is probs easier, but never tried it, stick with what i know

 

[DezMurph]

Thanks everyone for your help, found a USB flash in my house will crack on with it now wish me luck. I have armoury crate and Iv see BIOS updates on there or should I go strait to ASUS website?

 

[DezMurph]

So updated BIOS version 2004 and still nothing, this is so frustrating been at it last 2 nights.

 

[DezMurph]

Will direct them to this page as it’s from Overclockers, cheers for the help pal