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intermittent black screen after new gfx card installation

Discussion in 'Hardware' started by AngloMod, Mar 28, 2015.

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  1. AngloMod

    AngloMod Thread Starter

    Mar 28, 2015
    Hello there,
    I just replaced my GTX550Ti with a GTX960, I have an i5 3.0 Ghz CPU running Win 8.1 (64 bit) and 550W PSU. I have installed the latest drivers from NVidia.

    The PSU has 6 pin power connectors, which was fine for the old card but the new card has an 8 pin socket so I bought a 6-to-8 pin adaptor cable.

    The problem appears to be on boot up - I get a black screen, but if I remove the AC power cable and press the power button (to dissipate residual current) and then re-boot it's fine.

    Now this is no big deal for me, apart from being a ball-ache, but when my less-than-techie other half boots up to go on social network sites etc, it's kind of beyond the pale to expect her to do this.

    I've had the card out and put the old one in and no problems there. I've also run it without issue using on-board graphics (yuk). So the PCI-e slot and connectors have been re-seated.

    Any ideas?
  2. flavallee

    flavallee Trusted Advisor

    May 12, 2002
    First Name:
    Just saying your computer has a 550W power supply hasn't helpful.

    What brand name and model number is it?


    The GeForce GTX 960 graphics card uses 120W and requires a minimum of a 400W power supply.

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