Time Flies

Where does time go?
Intending to be at St P's for noon today I rose with plenty of time to spare, ate dressed washed and all reading done I happily awaited the hour of departure.
Why therefore with all things done and careful planning completed did I find myself suddenly rushing for the door?  At one point there was an hour before I left the next minute I was racing to get out on time!
Who stole those minutes? 

Switch the laptop on and watch it warm up and almost half an hour will pass before it is ready for work.  Switch it on and go make a cup of tea taking only two minutes and the brute is wondering where you have been and switched itself off again!  How does time work in such situations?
Waiting for a dentist to finish pulling teeth can take hours but a fanciful delight of whatever sort lasts only seconds, how come?
I am reminded of the tombstone which read:-

"Harry Smith the inventor of time travel.  

          Died 3rd February 2317."

This old laptop is quite good however a year or two ago I bought a second one as this was overheating and playing up.  Once I obtained a new one this brute began to play nice again!  The newer one has more power, more ram, more GB space and is slower than this one!  I am annoyed as I cannot figure out why.  
I have done all the usual things, increased ram, run the anti this and anti that, cleaned out this and that and having done all the usual things the beast still reacts slower than this old one.  Possibly Cortana that needless use of space might be responsible, it is off on the old one but keeps appearing unwanted on the newer.  I have tried closing it down as per usual methods but it keeps reappearing.  None of the recommended tricks work.
Possibly that is not the problem but I cannot work things out as to why it is slower, it ought to be faster than this.
A bit like me really, very fast for my age...  what?  Oh!