MSI GTX 970 4gb gaming videocards turn on but not detected by windows , just said turn down and conect pci e cables

[jagu_legendary]

mobo msi z77a-g45
i5 2500k
ssd sandisk 256gb for windows 10 and caviar blue 1tb for data
psu 750 w
8gb pny slr8
I instaled the card and said turn down and conect PCI E cables i put 1 x6pin and logo msi turn on no fans and no video, i put the 8 pin pci e cable and fans turn on but no video and system dont recognise the card. I cant install drivers because windows dont find any compatible device, i put only one 6pin PCIE cable and run on vga and my device manager said that windows stoped GTX 970 because dont work propertly. And the nvidia icon apears with yellow triangle inside . HEEEEEEELP! PLEASE . This is black magick. I need to return the card to store or any one will give me a solution, thanks.

 

[cin19]

You need to connect both 1x 6pin and 1x 8pin pcie power cables to the gtx970.
And what PSU do you have?

 

[jagu_legendary]

yes your right thank you ! Now work fine

 

[junkeymonkey]

if you look at 900 cards and the 970 on older board [and then notice how many use a sandy chip] that there are some compatibility issues all you can do if its not the card being a lemon is up date your board to its latest bios and hope it 900 card compatible

easy to find and see this issue across the web and maybe some resolves ?

https://forums.geforce.com/default/topic/788289/computer-won-t-boot-past-bios-after-installing-new-gtx-970/?offset=45

https://forums.geforce.com/default/topic/784038/black-screen-until-windows-boots-up-gtx-970-extremely-slow-boot/?offset=6

https://forums.geforce.com/default/topic/809811/geforce-900-series/from-gtx-660-to-gtx-960-now-pc-wont-boot-/2/

just to help get you started

glad you know got things going and a simple fix

enjoy