Random black screen boot, fans spinning, no beep, no video signal

[Alex Bakhtadze]

So earlier this week my brand new PSU fried while I was playing Fallout 4, I mean literally fried, there was smoke coming out the case and that harsh burning smell.So naturally the system crashed, blank screen but amazingly the fans kept going but I wasn't able to turn the pc off via the power button so I pulled the plug to the power supply. Trying to start it again resulted in the same smoke and blank screen, no beeping from the pc speaker but the fans are whirring. That was the Corsair 750M power supply which I saw numerous warnings about saying that it had cheap parts in some reviews and could easily fail. So figuring that was the case, I replaced it RM1000i which is highly rated and Tier 1 on the PSU tier list. I hooked it up, still the same annoying problem but no smoke or smell this time. Worked fine but after heavy video use(ie.games, youtube etc. the screen goes black but the fans are still active)I figured something wasn't getting power and re-plugged everything including the power to the video card(Geforce 970 GTX) that seemed to have work for one evening. Today I found a screw which holds the video card bracket still which I forgot to screw back on. Screwed it in and bam same boot up problems. It seems that my video card is now very picky about how it's plugged into the PCI-E port and what angle the PCI-E power cable is because a slight centimetre off or a screw on the bracket too tight and the video card just refuses to work. I'm afraid that when my old PSU went down it might have damaged the video card, motherboard or both. Is there any way to find out which part is faulty? Has anyone had similar problems to this?

My specs:
Power Supply: Corsair RM1000i
Motherboard: Gigabyte GA-970A-D3P
CPU: AMD 8350 FX ~4.0 Ghz(8 Core)
RAM: 16GB DDR3 RAM (Corsair Vengeance)
Video Card: Gigabyte Geforce 970 GTX 4GB

 

[JrRacinFan]

Try everything outside the case on top of a cardboard box, because that could be the culprit, causing a grounding issue.

EDIT
How long have you had this system up and running for?

 

[Mr.Scott]

Board is not good enough for an FX processor.
Weak VRM. Bet the PSU finished it off.

 

[Alex Bakhtadze]

Board is not good enough for an FX processor.
Weak VRM. Bet the PSU finished it off.

Yea,that's what I'm thinking now as well. I tried my old video card on it and still no booting.
I've got two replacements for the motherboard I'm choosing between.

1.ASUS M5A97-R2
2.Gigabyte 970-Gaming

Are either of these going to work with my CPU?

 

[Caring1]

You can tell if the VRM is too weak by removing the GPU and putting the CPU under load.
The GPU gets most of it's power from the PSU, not through the Motherboard.

 

[JrRacinFan]

@Caring1 very true but when you have a GPU that consumes as little as 12W to 20W at idle kind of makes that moot.

 

[Alex Bakhtadze]

Try everything outside the case on top of a cardboard box, because that could be the culprit, causing a grounding issue.

EDIT
How long have you had this system up and running for?

I've had this motherboard and CPU working together for about a year and a half.

 

[Alex Bakhtadze]

You can tell if the VRM is too weak by removing the GPU and putting the CPU under load.
The GPU gets most of it's power from the PSU, not through the Motherboard.

Have no way of checking that as my motherboard has no onboard video