R9 390 not working?

Hardware Hub GPU
1

Basically I got an R9 390 recently and got two molex to 8 pin adapters for this.
Now the card is not outputing anything and windows does not recognize it. I'm currently using onboard graphics since they are the only form of video output from this system (Even though PCIE is selected as primary source)

It's probably not total wattage issue (My calculations get my total wattage on peak usage to be 480 and I have 500).

My guess is it's the 8 pin since they didn't click in and still have a bit to go before they do but I can't push them in any further without breaking something.

Any suggestions on what may be the issue

2

You shouldnt need the included molex to 8 pin adapters provided your psu is worth a damn.

General rule of thumb if your psu hasnt got the pcie cables to run such a card then it wont.

What is your psu - make/model?

If something like a power connector doesnt look like it isnt in far enough then it isnt. Its either a good connection or no connection.

3 Likes
3

Could you maybe also provide further system specs?

4

The PSU is basically a no-name brand that provides 500 watts. It works for now.

5

no no no.
You'll either
A) overload it and it'll catch on fire or just die
B) kill your gpu and maybe everything else

~ buy a psu that meets the gpu's requirements.

where abouts are ya? can link some psu's that are decent enough for the job

1 Like
6

That's not possible. I've already been through this. I don't mind it catching fire because I'm protected under Australia's Consumer law.

It won't overload because I don't have any applications that will draw the wattage of my PSU. All my components at full strain only hit 480W.
This thing won't even boot. It's a long fucking story but my PSU can give the wattage and I can't get a new one.

7

Here's what I mean by not clicked in
That is as far as I can get it without it probably breaking, I nearly cut my fingers pushing it in that much

8

Fine. enjoy your nerfed machine dude. Only trying to help. Your psu cant handle such a gpu.

also:

1 Like
9

I only have to wait till the 10th before I get a new PSU and I need to verify my card works before the launch of fallout 4.

10

I don't think I've ever managed to make those powers to actually click in, should work like that without any problems.

11

Well I got them clicked in and it still ain't working.

12

Let it be there, and check if Windows recognizes what it is.

13


Nada

14

Then I'd say thats that, it's not powering up.

15

Well the light on it are but it's not outputting anything.

16

If you wanna break your rig, that's how you break a rig.

In all respect though, use pcpartpicker.com and go build your own PC with the exact same brands and all. It tells you how much power you will need to do so. You have to consider a PSU works at around 80% of its real power.

17

Definalty not the wattage. I just unplugged everything but the GPU and CPU to see if BIOS would display but nada

18

Why wouldn't it be the wattage? Do you know if you didn't break the GPU by overloading the PSU? Unless you did the test with a multimeter you don't know that.

19

Just making sure (I've seen this happen plenty of times before) You are connecting the display cable to the GPU right?

20

The usage idle is close to 250-300W
It couldn't have overloaded if I haven't gotten it to boit