MBP won't run Activity Monitor, other programs, find external after memory upgrade

Discussion in 'MacBook Pro' started by johlinco, Dec 21, 2008.

  1. johlinco macrumors newbie

    Dec 21, 2008
    I have a 15-inch 2.0 Ghz MBP that originally had 512 Mb of Ram. I just upgraded to two Gb but when I went to confirm that that new memory was in by checking in the Activity Monitor, the program would not open. I also tried to connect my external hard drive but its icon never appeared on the desktop. When I removed the external hard drive, I did NOT receive a message telling me that I had ejected it incorrectly which was something that I also found interesting. The new memory sticks are:

    mushkin 1GB DDR2 667 (PC2 5300) Model 971504A.

    The external is a Western Digital 500 Gb that I have never had any problems with.

    What have I done? Someone help me.

  2. darwinian macrumors 6502a


    Jan 4, 2008
    In R4, more or less
    Is it reversible? When you put the original RAM back, what happens?
  3. johlinco thread starter macrumors newbie

    Dec 21, 2008
    Should have mentioned that. When I put the old memory back in the problem still exists.

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