Friday R & R'ed PS on Ed's friend's computer.

It was much more difficult than I expected, but through perseverance I got it done ok.  It will probably last as it is for a couple of years, or so I hope.  One power supply cable wasn't locked in but this should n't be a problem since the desktop doesn't move around much once it is set up and running.  I can fix it if it ever comes loose in about half an hour or so.  All else was excellent.  I didn't expect to get involved in hardware issues.  I thought she had a "slow" computer, usually caused by shortage of memory or disk space.  Live an learn.