each corrective stroke deletes the next already existing letter

V

Vvictoria

Every time I need to make a correction in my typing each inserted letter
deletes
the next letter. This requires retyping an entire sentence to correct just
one letter.
Also, when I press enter to begin a new line it erases whatever I just typed.
I sent to detect and repair, supposedly "something" was downloaded, but the
problem remains. Please help.

Victoria
(not computer savvy)
 
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