Won´t boot after RAM installation

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I tried to replace the 2x1gb ram modules with 2x2gb modules from Kingston on my MacBook Pro, but it won´t boot. I only see the grey screen and the apple. I replaced the new modules with the old ones, but now that doesn´t work either. The mac simply won´t start with the original ram. I am sure the modules are inserted properly. Any ideas what might be wrong? I read somewhere about static electricity that can damage the motherboard when installing new ram, but would I even see the gray screen at startup if the motherboard were damaged?

MacBook Pro, Intel Core 2 Duo. New memory: Kingston KTA-MB667/2G
 

pigoo3

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I read somewhere about static electricity that can damage the motherboard when installing new ram

That's why you're supposed to discharge any static electricity before doing any internal work on computers!:)

Two ideas for you to try:

- Maybe try the original ram 1 stick at a time instead of pairs.
- Try booting the computer from the Disk(s) that came with the computer, and see if it will boot.

Good luck,

- Nick
 
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is it still under warranty if so put in the original ram and bring it in
 

dtravis7


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Try booting with the Install DVD that came with the machine. Hold down C after the startup sound. Let us know what happens.
 
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Thankyou all, unfortunately it is not under warranty anymore, and I hope I will find that DVD... I´ll get back to you soon.
 
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No. It will not boot from the DVD. I have also tried 1 original ram stick at a time. I have been thinking that all this might be coincidental: The mac has been unstable lately. It sometimes just freezes, sometimes the keyboard and trackpad is dead at startup (or falls out after a few seconds) (I tried the sticky note solution and that works - but not every day) a few programs wont run, they make a single jump in the dock and that´s it. And the Carbonite free trial I deleted still is hidden somewhere in the root, slowing down everything. And t is really slow sometimes. I have tried to turn off all widgets, rid with all kinds of auto updates etc, and I run disk repair frequently. I wonder if the mac just use this ram issue as an excuse to blame it all on me...
 
OP
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I bought Snow Leopard, and the mac obviously liked that. It finally did boot, and it accepted the new RAM too :)
 

pigoo3

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I bought Snow Leopard, and the mac obviously liked that. It finally did boot, and it accepted the new RAM too :)

Well...it's a mystery why it works with 10.6, and not 10.5...but hey, it's working.

Lets keep our fingers crossed that it remains stable!:)

- Nick
 

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