My computer randomly shuts down and won't restart.

My computer randomly shut down and would not restart. I took it to an apple store and they fixed it by running something through the disk utility. I was told to run something else (it had to do with what the computer does when it shuts down as I don't shut mine down a lot). It had been running when the guy showed me it at the upper right corner and said "initializing" but I did not remember what it was called when I got home and it was no longer open. Any one have a similar problem where this was suggested and remembers what is it called?

Try a SMC reset.
DALE

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    Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
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  • Computer randomly shuts down and...

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    @Jennn 
    ‎Thank you for using HP Support Forum. I have brought your issue to the appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post ( serial numbers and case details).
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  • HT3964 What if  a mac pro spontaneously shuts down and won't restart

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