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  1. #1

    Member Since
    Jun 06, 2006
    Mac Pro/MacBook Pro
    Monitor flickers at startup, then fine, just started
    I have a MacPro 3 GHz Dual Core Intel, OSX 10.5.4, SMC version 1.7f10, Boot ROM Version MP11.005C.B08; ATY, RadeonX1900 (Hope this is a hardware issue)

    Owned it for about nine months, working fine; normal shutdown, powered up and obtained substantial monitor flicker before starting; turned off and performed the reset for the SMC, it started fine, but when I powered it off again and restarted, I received substantial monitor flicker until it got to the blue screen. Logged in and the monitor and the computer works fine. I have had power spike issues at the house.

    Any recommendations or thoughts? Is the video card getting ready to go out?


  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac i5 2.7GHz, 16GB memory, OS 10.11.1.
    Firstly open her up, do a clean for dust and make sure the card is seated really firmly and tightly.

  3. #3

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Fort Worth, Texas
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
    I agree with harry. Re-seat the video card or move it to another open slot. Power surges occurring often enough can cause damage to components. I have had that happen with various cards in my PC. If you're in an area susceptible to power surges, it's best to buy and use a good UPS with built in surge protection.


  4. #4

    hughvane's Avatar
    Member Since
    May 18, 2008
    Banks Peninsula, New Zealand
    MacMini 2.4, 8 Gb, OS 10.10 and 10.6; MacBook 2.4, 4 Gb, OS 10.6.8
    Quote Originally Posted by EarlsMac View Post
    I have a MacPro ... ATY, RadeonX1900 (Hope this is a hardware issue) Any recommendations or thoughts? Is the video card getting ready to go out?
    What type of monitor - CRT or flat panel; and how old? If the former type, it may be a faulty tube which settles down once warm. In addition to the video card check and cleanup mentioned, check the cable connections.

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