My F1 not Work!!

In Delphi,when I Preessing F1,no help window show.And when I use Menu "Help-Delphi Help",also no help window show.

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How should I do?
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Go to C:\Program Files\Borland\Delphi\Help or to the folder where is installed you version and check if you have help files inside. Maybe when you have installed your Delphi you have unchek the help feature.
SingBabysAuthor Commented:
All the help files is there,Yesterday I press some keys,then F1 not work
Ferruccio AccalaiSenior developer, analyst and customer assistance Commented:
use regedit and look in HKEY_CURRENT_USER\Software\Borland\Delphi\x.0\Help.....the value must be the path where there's the help file (i.e.  C:\Program Files\Borland\DelphiX\Help - x means your Delphi version)

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Try to reinstall the Delphi over existing one.
And I think that the Delphi set-up permit to choice if reinstall or just repair installed version.
Ferruccio AccalaiSenior developer, analyst and customer assistance Commented:
why just a C grade?
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