PC Wont Turn On After a GPU Install

[Arif Akhtar]

Hi Everyone:

This is my build:
i7 4790k
ASUS MAXIMUS VII HERO
MSI GTX 560 Ti Twin Frozer
SeaSonic X Series X-850 (80 Plus Gold)
Corsair H100i

My GTX 560Ti developed an overheating problem so I submitted it for RMA. I have been using the on-board Graphics till now. Today, I received my repaired card which was tested at the service center in front of my eyes and it was working fine.

I installed the GPU in my system but forgot to connect the power cables to the card. I turned on the system. Fans and leds flash for half second and nothing happened. Then I realized that I forgot to plug the power cable to the GPU. I connected the power cable and tried again but the same thing happened again, system fans and leds flashed for half second

I have tried to boot the system with bare minimum and it works fine as long as I don't install the card. I also tried both the PCI-e slots but system doesn't turn on if the GPU is installed in any of the two pci-e slots.

However, If remove the GPU, the system boots normally and everything is fine.

I am not sure which one is the culprit (PSU or PCI-e slot or GPU)?

Please help

 

[Clicky999]

Try it in a different PCI slot?

 

[GhislainG]

Bring it back to the service center, along with your PC so they can witness the issue. They will also be able to test your PC with another GPU, etc.

 

[Arif Akhtar]

I have tested the GPU on friends computer and it is working fine..

Then I guess, Mobo or PSU could be the issue. I have tested both PCI-E slots. Is it possible for both slots to go kaput??

 

[GhislainG]

If the GPU works fine, then it may have damaged the motherboard when it first failed. Not connecting the power cable(s) to the GPU shouldn't cause motherboard failures. The PSU would have to be extremely weak to cause that issue because the GPU doesn't draw much power at POST, but it still is a possibility.

 

[junkeymonkey]

'However, If remove the GPU, the system boots normally and everything is fine.''
'

I assume you got to go back in the bios and reset from onboard back to pci-e ??

 

[Arif Akhtar]

I have stress tested my CPU to increase the power consumption to check if my PSU could handle it. The power consumption went till 170W and there was no issue....

Also, I have changed the bios setting to PCI-E but still nothing..... The issue is that the system doesnt turn on...so no POST

 

[GhislainG]

You've already determined the GPU works fine in another PC. Could you borrow a similar GPU to make sure the issue is not the motherboard? If another GPU also won't work, then you'll know the PSU was damaged and it can no longer handle the extra load. The motherboard may have been damaged, but there are no other tests that you can do by yourself.

 

[junkeymonkey]

after my ''last'' anus [I mean asus ] experience , I would not put it past its the board changed out the board with another brand and all my issues wen away using the same hardware form off the anus [opinion]

 

[GhislainG]

The OP may not be prepared to replace an expensive motherboard by a different one, particularly if it still is under warranty. I also ran into issues with Asus motherboards, but that probably is because I used Asus more than other brands.

 

[junkeymonkey]

just jump on the rma band wagon and hope he gets lucky on a part .. thing is with what I learned with asus is you just get sent back another persons rma as I seen with them never a new replacement just a so called referbed then if they claim customer abuse he will be footing the bill ?? its not the same asus I grew up with anymore -- high hype / low quality /buggy bios [that goofed and overvolted the slot and started to burn the card up in it or the slot its self ]

but lets hope he finds a quick simple solation and ends well ... sorry

 

[GhislainG]

A couple years ago I sent Asus a video card and they fixed it as I got back the same serial number. Even though I didn't care, I marked it to check if it really was the same card or if they replaced the serial number sticker on another card. I couldn't see what component they replaced, but it has been working fine since then.