Hello everyone, I come to this forum searching for hopefully a definitive answer on what is going on with my MBP, and what steps to take to resolve the issue. My MBP has the following specs, per Apple's Tech Specs site: -Early '08 model -2.4 Ghz Intel Pro Duo -NVidia GeForce 8600M GT graphics processor -200 GB HD Nearly ever since I had the computer, it has run really warm. At times it would get so hot that it'd burn my legs when it was on my lap. I have it on an alumminum stand with plenty of air flow. I feel like that's part of the reason I'm on my third battery in 5 years. And the current battery is broken and does not hold any charge. but anyway, about 9 months ago, my MBP started randomly shutting down on me. Didn't matter what I was doing - streaming Youtube, playing a game, writing a paper - it would just shut down. Sometimes it wouldn't come back on until it had cooled down. About 6 months ago, the same thing happened. BUt it wouldn't turn back on. I press the Power button, the sleep light turns on to full brightness and I hear the hard drive start spinning up. The screen never comes on, it stays dark, and the sleep light goes dim and starts flickering, then it shuts off. Hooking up to an external monitor does nothing. Even holding down the Power button does nothing. If I do that, the Sleep light just stays flickering until I release the button, then it shuts off. I've searched high and low online, and I've seen posts that people have had similar problems as me, but in a majority of them, their screen comes on. I feel like since my screen doesn't come on, it's a power issue. When it first shut off and wouldn't turn back on, I took it to my local Apple store, and the Genius there told me it was a logic board issue, and that Apple could fix it for $320, plus an additional $100 to recover data. Since I dont think this is a HD issue, all my data should be ok, correct? I then took it to a local computer repair store, who told me it was dirt in the MagSafe adapter slot, and to take it home and clean it out and it should work. It didnt. So then he told me to bring it in and for $50 he could diagnose the problem. He told me it was the logic board (which I already knew, a waste of $50...). After putting off fixing it due to financial issues, I finally am able to fix my computer. But after doing more research, some people are saying it's a left I/O board issue, not a logic board. Again, my symptoms are similar, but not exactly like many of the other posts I've seen on here and other tech websites. Some blame the I/O board, others the logic board, still others the NVidia board... I don't want to buy the wrong board and have it put in. So I could to you MacRumor community, hopefully you can assist me in diagnosing the problem and brining my computer back from the dead. Any info or assistance would be appreciated. Thanks in advance!