Help needed please...

Jon H

Jon H

Jon H

Associate
Joined
27 Dec 2020
Posts
8
Hi all, I've just bought my son a new graphics card and PSU. I'm having a few issues...I have connected all cables to the PSU but when turning it on I get a brief spin of fans and a flash of LEDS then nothing.
The led stays lit on the motherboard.
I'm pulling my hair out and my son is gutted he can't play his PC.
Specs:
Corsair RM650X
EVGA gtx 1070 FTW2
ASUS M5A97 R2.0
AMD FX-8350

I've done the compatibility checks and all seems fine. Any help would be really appreciated.
Thanks Jon
 
Yep, all cables in and seated properly. I tried the new PSU with the original Graphics card in first and had the same result.
 
The tiny plugs for the on button/reset switch etc on the case.

Actually thinking about it, its probably not this if you have only changed the PSU and GPU... has to be a power cable... you positive you have connected to the correct ports on back of the PSU?
 
All works fine with the old PSU but I don't think its man enough for the new graphics card. Also its a Corsair VS450 so only has one cable with two 8 pins for the graphics card. Im I right in assuming the GTX 1070 needs two separate 8pin cables rather than one cable with two 8 pins?
 
I've connected the CPU and GPU 8 pins to the 6+2 PCIe and 4+4 CPU on the PSU. Is that correct? There's nowhere else for them to go.
 
Sorry, let me get this right.

Your old graphics card (which I assume worked fine?) Doesn't work with your new PSU, or in other words, neither graphics card work on the new power supply?

Then I'd say your power supply is faulty if you are connecting everything correctly.
 
Hmm Corsair RM650 is absolutely fine for this setup so its not that.
Are you sure it doesnt have two seperate cables you could use?

Connecting the GPU cables to the PCI-e ports on the PSU is correct, the CPU one should be marked for CPU but if its as you say and nowhere else for them to go should be ok.

Maybe take some photos and upload for us to see, you need to put them on an image hosting site and copy the BB code in to the post.
 
Budforce: with either card the PC only fires up for a brief moment...fans spin briefly and the leds flash. Im assuming power is getting to the motherboard as the green led stays lit.
RexAlba: I'll try to get a photo uploaded.

If I can't get the new PSU to work. Will I be ok using the old PSU for now? Its a Corsair VS450 but only has a single GPU cable with dual 8 pins.
Thanks both.
 
Does sound like the new PSU is faulty... apparently the RM series does have quite a high failure rate and especially the 650 unit (according to some posts i found on redit).

450W would be very low for a 1070 but you might just manage, could try it and maybe try reducing power requirement by unplugging any extras you have on the system until you can get a replacement for the 650.
 
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