Assuming all the names are in column A, right click on the top of column B and insert a new column. In the first cell of that new column enter the formula
then hit Return. Click back into the first cell with the lower case name. Now drag that formula using the little square at the bottom right of the cell, to the end of your names. You will notice that after you've hit Return again, the names will change to lower case. Now right click on the top of the column with the uppercase names and choose Hide.
If you have BILL
=LOWER(A1) will change it to bill
=PROPER(A1) will change it to Bill
=UPPER(A1) will change it back to BILL
Hope it helps a little, Newuser2533, as I know little about Laptops.