Hi there,
I have an Acer 5630 with the same problem you are mentioning (except the game dvd in the drive...ha ha) and it is infuriating! I sent mine into Acer, they did an eRecovery and restored it back to factory default. When they shipped it home, someone forgot to use packing materials and it came home with a cracked screen and cracked case. I sent it back again and they replaced the screen (but didn't bother to fix the mashed corner of the case). Everything worked fine...for about a month. Now, I'm in the early stages of the same process I've been through before...it shuts down randomly, mainly when the processor gets loaded down, but I doubled my RAM and still have the problem. There are some hot spots on the case, but the problem happens when the case is cool sometimes too. I'm going to do some of the checks listed in the thread, but I forsee another trip to Acer Wreck Support. I'm trying to get a website done, so it's a race against the decay.
I'd like to just point something out. When I picked out this little beauty at Micro Center, I was waiting in line to pay when a cashier at the next stand starts telling his buddy what P.O.Ses ACERs are and how he wouldn't even use one for a doorstop! Do you think the Universe was speaking to me? My girl's Acer died in the Video Card about a month after the warranty ran out...wah-WAH.
:-( *sigh*
Maybe Acer needs a recall....