I have an older machine with the following specs:
DIMM: pc6400 ddr2 800mhz Patriot 4GB (2 x 2 GB)
MB: Asus P5ne-SLI
HDD: WD 1 GB
GPU: PNY GForce 750Ti
PSU - Seasonic 620W
Works fine for its uses - internet, streaming and Microsoft Office. No gaming.
When it was running Win 8.1, the lack of USB 3.0 became a problem, so I purchased a Rosewill RC-505 two-port USB 3.0 card. It plugged into the PCIE port on the MB, which is right below the GPU. All worked fine.
So, ever since I upgraded to Win10, I have been getting black screens almost daily. Doesn't matter if PC is idle or doing something. The screen will go black suddenly and will not respond, although the computer appears to be running. Computer is unresponsive and does not complete tasks (downloading, etc) that were going on when the black screen appeared. On restart, no error or other indication of anything specific appears in the Event Viewer.
I tried a lot of things. Replaced RAM, replaced PSU. Turned off all sleep, hibernate, fast start options. Reinstalled Win 10. Replaced old, old GPU.
Last week I took the machine apart and put it together piece by piece, letting it run overnight after each piece. All ran fine until Iinstalled the Rosewill RC-505 two-port USB 3.0 card. Back to black screens in less than an hour.
So here's the advice/question. How likely is it that the Rosewill card is bad and that I just need a new USB 3.0 card? The card seems to work fine itself. FWIW, It has a molex connector, and the black screens happen whether it's connected or not.
One thing that has occurred to me is that, due to the location of the lone PCIE port on the MB, the Rosewill RC-505 two-port USB 3.0 card sits right up against the bottom of the GPU card - almost touching and covering the fan. Is there a way to tell if the GPU is just overheating because of it? On the other hand, there's nothing in the event viewer about the card or drivers having any issues. And it all seemed to work fine in Win 8.1.
I'd really rather not spend much money on this machine, but a new USB 3.0 card is not terribly expensive, so I could live with that. If it's more complicated I may be better served by a new machine.