Can't install a p-cie card

rgreen2002

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Feb 8, 2013
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Posted this before but I received no answers. Throwing it out there again to see if anyone has a clue:

I am stumped here. Long story but I will try to shorten it.

Bought a pci-e USB 3.0 hub a while back for my desktop (this card to be exact

https://amazon.com/gp/product/B00FPIMJEW/ref=oh_aui_det... )

Plugged it in and plugged in the power (pci-e to SATA) for the card itself to the 1000W evga power supply. Turned the computer on...nothing. I mean a flash like it wanted to come on and then nothing... I turned it off, tried another p-cie slot, nothing. Tried another cable, another slot on the power supply..... nothing. Unplug the card the computer boots up fine.

So I assumed I got a bad card. I ordered another card later (I got busy... bought this card

https://amazon.com/gp/product/B077GQGYTR/ref=oh_aui_det...

and tried the same thing...plug it in, plug the power supply in, nothing. Different power slots, different pci-e slots, different wiring...nothing.

Finally, I was waiting for the delivery of a new computer(here:

https://amazon.com/gp/product/B071WSGD9V/ref=oh_aui_det... )

I tried both cards (actually 3 cards since I had another one I found lying around...who knew!) and the power supply... all three with the same damn result. The new computer only has a 500w PSU BTW.

I was thinking, is this a PSU issue? The only things connected to the new computer 500w PSU is the Mobo(Asus Z270 pro 4), the cooling fans, LED lighting, the water cooler for the CPU, and the GPU (Geforce 1080 Ti). Don't want to buy a new PSU and find out it's not the issue...

In short... what am I missing. Isn't the pci-e card supposed to be plug and play basically? They seem to short out my mobo... Is this a hardware issue, a BIOS issue, a USB issue...I am at a loss.
 
Solution
OK... I would like to say I "solved" this issue but that would suggest I understand WHY this didn't work in the first place. In the end, I purchased a SATA splitter and split the power supply to my HDD. Plugged it in and BAM.... worked right away. Baffled but happy!
Here is how you can find out if the PS is the problem. First check all your PS voltages with the card uninstalled. Write them down. Then check the voltages with the card installed. If you see any significant drops in the voltages...the PS is your problem.
 

rgreen2002

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Feb 8, 2013
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Hey! Sorry guys it got a little busy after the holiday.

alexoiu - I am using a 6 pin ide to sata cable... Holy crap...do I need a 6+2....arrgh

jay32257 - I can check the voltages without the card installed but with the card installed I could not check the voltage because the computer will not boot up at all.
 
If you checked the voltages with a meter with the card uninstalled and installed you may find a voltage (or voltages) drops significantly when you install the card. If this is the case, it can cause PC not to boot...and if this is the case. the card is either pulling down the PS (defective card) or you have a defective PS.
 


I hope you are not suggesting to install card WHILE machine is running ...
 

rgreen2002

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Feb 8, 2013
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Unfortunately, no cables were provided for my PSU because the new computer is a pre-built computer.

OK.. so an update. Bought an 8-pin PCI-e to molex cable, a molex extension and a molex to sata cable... plugged it in directly to the PSU and the USB PCI-e card.... nothing. Same result as before... a flash of the fan lights and then nothing.

The 8-pin is a splitter so I tried the other side, nothing. Tried the second 8-pin (I bought a 2 pack)... nothing. Unplugged the card and left the 8 pin plug in the PSU... nothing. If I unplug the 8-pin cable from the PSU the computer will boot fine.

Tried this with both 8-pin PCI-e to molex plugs with the same result...

With the 6 pin I could leave the plug in the power supply and boot up, I just could not plug it into the PSU and the card. Now I can't even have the plug in the PSU and get a boot up.

This crap is insanely frustrating and I have no clue what in GOD's earth is going wrong... This isn't my first build or pci-e install and I just do not get it.
 

rgreen2002

Honorable
Feb 8, 2013
27
0
10,540
OK... I would like to say I "solved" this issue but that would suggest I understand WHY this didn't work in the first place. In the end, I purchased a SATA splitter and split the power supply to my HDD. Plugged it in and BAM.... worked right away. Baffled but happy!
 
Solution