Question GPU not recognised

[tomspcnewb]

Hello people, I'm in the process of building my first rig and have had most of my help from here.

Been trying to install an rx580 in a dell 990, but am having no luck with windows picking it up.

Cables are in all fine, they are labelled so I know i've got the right PCI e in there.

Ive just tried the radeon hd 6450 that came with it, and no issues what soever, even on launch windows recognised and said you cant use PCIe slot with onboard DP output to pc.

Is this likely to be a faulty card? I noticed the seller was selling a few of these, is it plausible they were used for mining? And if so (excuse my layman) could it be that the wrong bios is flashed and would that stop it from appearing in device manager and such?

Also, I'm waiting on an SSD, i plan a doing a full reset and I've heard its best to leave only the drive you want windows on, do I disconnect the HDD prior to the reset? And if so do I just re attach and clear the drive manually once setup is complete?

Thanks for your help.

 

[COLGeek]

What is the full model of your Dell?

 

[tomspcnewb]

What is the full model of your Dell?

Dell optiplex 990 MT is all I know im afraid.

 

[Dark Lord of Tech]

What power supply are you running?

 

[COLGeek]

Many Dells limit the wattage to the PCIe x16 slots (less than the PCIe standard of 75w). This limits the use of higher end GPUs in them.

You could also have a defective GPU. Do you have access to another PC to test it?

 

[tomspcnewb]

What power supply are you running?

EVGA 500w1 . Not the best but its a temporary stop gap.

 

[tomspcnewb]

Many Dells limit the wattage to the PCIe x16 slots (less than the PCIe standard of 75w). This limits the use of higher end GPUs in them.

You could also have a defective GPU. Do you have access to another PC to test it?

Yeh i've heard. But i'm also aware of people that have ran them successfully. I also read that the w is limited in the SFF models and not the MT

 

[Dark Lord of Tech]

Most likely it's the slot limitation. Even if it does run eventually , performance will be very choppy. My parents have my old Optiplex 990.

 

[tomspcnewb]

Most likely it's the slot limitation. Even if it does run eventually , performance will be very choppy. My parents have my old Optiplex 990.

maybe, but hopefully not, you are right.

However there's much anecdotal evidence on the web and youtube of people doing so successfully.

 

[Dark Lord of Tech]

Also a ton unsuccessfully , The board really isn't designed for those type of upgrades in the power delivery dept.

 

[tomspcnewb]

might have to run back to consoles

 

[tomspcnewb]

I've just seen someone who had a similiar issue fixed it by changing bios from legacy to uefi.

I know where this setting is, but he says you need to change MBR to GPT prior to this.

any help? its a bit beyond me.