computer woes

I couldn't write my usual blog last night.  My computer wouldn't stay turned on.  It kept turning itself off, which is aggravating, especially when I'm trying to ger something written.  Tonight, so far, this same computer is behaving perfectly, like nothing ever happened.  I think it heard my muttered curses and threats to drop it off the balcony.  When it does turn itself off, it seems that the way to get it to come to life again is too pull out the power plug at the computer end and then plug it in again.  I'm hoping that this is only a problem with the electric cord and plan to take everything to A+ computers tomorrow to see what they can suggest.  Stay tuned.