Will a PRAM reset fix this MacBook Pro issue?

Ok so a quick summary of my problem. I have a 15" macbook pro that is about 2.5 years old. A few months ago, I closed my laptop before I went to bed (as I always do), and the next day, the screen wouldn't come back on. I have the extended warrenty, so I sent it to Mac and they replaced the logic board. Got it back and worked fine for a few months. Then, a week ago, as I'm simply surfing the web, the screen goes out again. But this time, it did the "start-up" noise before it went blank. Now that little light on the open-buttom will blink 3 times every 6 or 7 seconds. So I knew it wasn't the same problem, but I called Mac and they took it back. This time when I got it back, nothing was replaced. The repair summary just read "reset PRAM".

So I guess my question is, how can I fix it myself this time? Is a PRAM reset easy to do? Now before I sent it in a second time, the help guy said to unplug it, take out the battery, and hold the power button for 10 sec. I did it and nothing happened. Well, once I got it back, the screen went out almost immediately. I did this reset thing, and it worked. It happened again the very next day and this time that reset did not work.

Anyone have any ideas? This is starting to piss me off. I'm really not a mac guy, so I don't even know the basic troubleshooting methods to start with.

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  1. Basic Trouble shooting list for macs.

    Heres my generic list of things to do for weird system behaviors. If one step works, then do not go on to the next:

    1) Restart the computer.

    2) Go to Applications –> Utilities –> Disk Utility. Select your hard drive then click "Verify Permissions" then click "Fix Permissions". Also click "Verify Disk" and "Repair Disk".

    If you cannot boot the system, put the install disk in. Press and hold ‘c’ at startup to boot from the install disk. At the install screen, go to the top tool bar and click "Utilities" –> "Disk Utilities" and do the steps above.

    3) Reset NV-RAM and P-RAM ‘http://support.apple.com/kb/HT1379‘

    4) Reset SMC ‘http://support.apple.com/kb/HT3964‘

    5) Run diagnostics, clear caches and run Unix cleaning scripts with Onyx (free) ‘http://www.apple.com/downloads/macosx/system_disk_utilities/onyx.html‘

    6) Start in safe mode to see if the problem persists ‘http://support.apple.com/kb/HT1455‘

    7) Archive and reinstall mac
    8) If all of the above fail to fix the problem, take it in to the apple store.

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