8 Replies Latest reply: Sep 8, 2009 10:25 AM by kmac1036
jit Seng Lee Level 1 (0 points)
yesterday I was serving the net using Safari and everything works fine,after that I put my Macbook to sleep as usual (I usually don't shut down)
few hours later I when I try to wake it up and the screen just went black, no screen light, totally black, the LED light is on but doesnt blink as usual (it keeps on)
the machine vibrate but no response.

I forced shut down, restart and everything remains the same.
I also tried Command + Control + R + P and nothing happen.

anyone experience similar problem?
what can I do?

MacBook, Mac OS X (10.4.9)
  • kmac1036 Level 4 (2,360 points)
    try an smc reset: pull charger & battery, hold power button for 10 seconds. reinstall power & try booting.
  • discounteggroll Level 1 (85 points)
    try what KM said. Also, to reset PRAM you hold down command + option P + R (not control)
  • jit Seng Lee Level 1 (0 points)
    Hi guys, thanks for your replies

    I did what you said (plug out the batteries and charger, press the power button but it still black out)
    also tried the Command + Option + P + R (sorry i typed wrongly in the previos post)

    by the way I insert installation disc 1, I can hear the disc is running but no response on the screen, now I can't eject the disc.

    any other solutions?

  • jit Seng Lee Level 1 (0 points)

    I just got my macbook back from the service centre,
    according to them one of the RAM slot was gone,
    they said it will cost me thousand dollars to replace a new slot,
    so they just took out one of the RAM, and left one inside.

    I would like to know what can I do to prevent this happen?
    and will my macbook function as usual with only one 512 RAM?

  • kmac1036 Level 4 (2,360 points)
    I was thinking maybe RAM...

    depending on your location, the parts may be more expensive. usually, the fix is to replace the entire board.

    the cheapest fix for now would be to buy a the largest SIMM your machine will support & replace the 512mb as that's pretty low, depending on what apps you use...

    Which model macbook is yours?
  • jit Seng Lee Level 1 (0 points)
    I am using a Macbook white (80 GB) (2 GHz Core 2 Duo)
    I bought it about 2.5 years ago

    by the way whats the SIMM you mentioned? and where can I get it?
    thanks alot
  • discounteggroll Level 1 (85 points)
    your model supports up to 4GB of RAM (2X2GB) so you're highest option would be to buy a single 2.0GB chip and install it in the functional slot.

    I am an Apple Authorized Technician and have seen this numerous times in the past, so you are definitely not an isolated incident.

    Here is a link to a very popular store to buy apple-compatible parts:

    for $35 and about 5 minutes of your time it is probably the best thing you can do for your computer. Sure you won't have dual channel memory speed, but when you compare $35 for a RAM chip vs. $1000+ for a new macbook, it's pretty easy to decide. Throw the 2GB in, use it for another 2 years and then decide if it's time to replace the computer.
  • kmac1036 Level 4 (2,360 points)
    yep, agreed. thanks for posting that.