Comp turns off opon Installing Maple

Well, I've been inactive for quite a few weeks and felt like continuing my CB. But as I was patching to from v65 to v66, it said that my Mob.wz was corrupt. Me being lazy and not going to find a working Mob.wz file, I just uninstalled. Once I finished downloading v65Installer and ran it, after the bar for "Extracting Maplestory.msi" was full, my laptop randomly turned off. Tried again, same response. I know its not over-heating or such and I have had a history of it randomly shutting off during my Maple playing times.

Any help?