while typing if I stop it will sometimes jump to middle of sentence

sandiblast

bill14

If you mean the cursor jumps around, I had same problem, was driving me bonkers.  For me, I finally realized it was because I was accidentally bumping the touchpad while typing.  I found even if I hit an area around it, same thing would happen.  I turned my touchpad off completely, as I have no use for it anyhow because I use a regular mouse.  That solved it, on my V5-571P.