Not starting-on after trying to repair KERNEL PANIC crash

hello
my macbook pro crash, at first once few days, and now once couple hours.
it notified a KERNEL PANIC, asking to restart the computer. i have done it few times, without doing anything else in order to fix it.
today i tried to fix the kernel panic.
first i tried to click the 'c' during restart, but the system didn't download and got stuck in the apple display, without downloading.
with another restart the system downloaded well.
second i tried to use the COMMANDOPTION+PR click while starting up, and it also got stuck in the apple window display.
but now, also re-restarting, while clicking nothing, the system don't downloading and staying stuck in the apple display.
what can i do to fix it?
i feel lost, would appriciate any help!
thanks, avihay.

Kernel Panics can have multiple causes. The most frequent from what I've seen are related to RAM either being incompatible or failing, yes RAM can fail. The first thing I'd do is reseat your RAM and see if that helps.
Also there are numerous resources available (Google) here are a few that will help you locate your KP's cause and solution:
http://www.thexlab.com/faqs/kernelpanics.html
http://support.apple.com/kb/HT1392
http://www.index-site.com/kernelpanic.html
http://developer.apple.com/library/mac/#technotes/tn2002/tn2063.html
Roger

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    hello
    my macbook pro crash, at first once few days, and now once couple hours.
    it notified a KERNEL PANIC, asking to restart the computer. i have done it few times, without doing anything else in order to fix it.
    today i tried to fix the kernel panic.
    first i tried to click the 'c' during restart, but the system didn't download and got stuck in the apple display, without downloading.
    with another restart the system downloaded well.
    second i tried to use the COMMANDOPTION+PR click while starting up, and it also got stuck in the apple window display.
    but now, also re-restarting, while clicking nothing, the system don't downloading and staying stuck in the apple display.
    what can i do to fix it?
    i feel lost, would appriciate any help!
    thanks, avihay.

    yeah, i'm sorry for the mess.. I'll try to make it clear..
    i tried the hardware test and it found nothing.
    i boot again from the correct disk, which came with my machine. i set the disk utility from it, and repaired the hard disk. it said that my hard disk is ok.
    will it be ok now? or is the disk utility was unnecessary because on the hardware test the hardware have found to be ok. and in that case - would i need to re-install the operating system and backup everything first? or can it be ok just now, without more coming kernel panics?
    thnx
    avihay

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