My GT60 0ND just completely died... help?

Question

'm usually not the one to ask for support like this, but this time I would really appreciate some advice. I cherish my MSI GT60 0ND-250US laptop, and while playing a simple, non-graphically demanding game last night, my entire laptop just died. In a split second the fans turned off, the screen went black, the hard drive shut down, and it was completely bricked. It didn't overheat, as that was the first thing I felt for and upon inspection the fans are clean of dust. Talk about any computer user's worst nightmare!
So far, I have tried:
 - Removing the power supply and trying to start it up
 - Removing the battery and plugging it in and trying to start it up
 - Removing the disk drive and trying to start it up
 - And finally, removing the HD and trying to start it up
And, as you could probably guess, none of it worked :(. I'm trying not to freak out, but short of replacing the CPU/GPU, I can't really think of what to do! Every 20 seconds or so I can see the battery indicator LED flash on for a split second, so some power is flowing sometimes at least. Otherwise, it is completely 100% dead. I can't find any similar problems for MSI laptops online, and as I said, I'm pretty desperate at this point. If anyone here has any advice at all, I would be greatly, greatly appreciative!

Answer 1

Thank you so much for the quick response! In response to your advice:
1. I just tried uninstalling one RAM stick and starting it up, no change.
2. This is one thing I'm hesitant to try - If I uninstall the GPU, I don't have the thermal paste or whatever it's called to reinstall it. Also, I was under the impression that even if the GPU was broken in some way, I would still hear the fans trying to start up. I can of course try this if you believe it's the best course of action, but hopefully as a last resort.
3. Just tried that now, and there doesn't seem to be blinking. Also, I was a bit unclear in my original post: I saw the battery light blinking at about 20sec intervals last night (while the battery was installed and the laptop unplugged), but after a while gave up and got some sleep. By the time I woke up today, the blinking stopped, even though literally nothing changed except for the passage of time.
Again, thanks for the great advice!