[Ham-Computers] System Startup Question.

[KD7JYK]

I click Start, Run, type "MSCONFIG" and the appropriate program is run...

Under the "Startup" tab there are 16 items listed, four are checked, some
are repeats.

Is it necessary to have the same item listed several times, none of them
checked?

Some items are from programs no longer installed.

Some lines were never used to begin with, none the less, they are there.

How can these lines be removed from the list rather than just remain
unchecked?

Kurt