lolololol I've had an eMachines for the last 4, going on 5 years and ti's worked flawlessly. Then again, I did replace the power supply because I knew the one it came with a shit (any prebuilt is going to have a shit power supply). Other than that, it's got the original motherboard, hard drive, memory, and cpu.
Moral of the story, learn how to take care of your shit.