Help Macbook Air Grey Screen on Boot

Discussion in 'MacBook Air' started by ser968, Aug 21, 2014.

  1. ser968, Aug 21, 2014
    Last edited: Aug 21, 2014

    ser968 macrumors member

    May 18, 2008
    I rebooted my macbook air last night and upon reboot, I just get the grey/white screen (no apple ever shows up). I can't find my Macbook Air startup disk (it may not have come with one), but I attached a superdrive and put in a startup disk from my iMac to see if that would work (and pressed the Option key upon restart) and nothing happened.

    Now I'm stuck. Any advice on next steps? Thanks.

    FYI - I was running a beta version of Yosemite
  2. dan1eln1el5en macrumors 6502


    Jan 3, 2012
    Copenhagen, Denmark
    try resetting the PRAM

    if you hold alt down while booting do you get several boot options ?
  3. ser968 thread starter macrumors member

    May 18, 2008
    I tried resetting the PRAM (option+command+p+r) and that worked, but when I hold down the alt/option key on reboot, nothing happens - I just get the white/grey screen (I had a USB drive loaded with recovery assistant).

    I also tried command-r and nothing happens.

    As a side note, it only appears that the USB port on the right hand side of the keyboard lights up my USB drive. The other side (by the power cable) does not light up my USB drive.

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