Convert pdf to jpg (or other format) fail in Windows 10

[tes]

Hi.
Using 'convert' line command in Windows 10 OS

convert logo.pdf logo.jpg

fail!

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c:\imagemagick>convert logo.pdf logo.gif
convert.exe: FailedToExecuteCommand `"gswin32c.exe" -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r72x72" "-sOutputFile=C:/Users/Pc/AppData/Local/Temp/magick-14196KxjSaNpQNYxQ%d" "-fC:/Users/Pc/AppData/Local/Temp/magick-141963h9eyatYgQCM" "-fC:/Users/Pc/AppData/Local/Temp/magick-14196iTR1oQwqhsrg"' (Impossibile trovare il file specificato.
) @ error/delegate.c/ExternalDelegateCommand/480.
convert.exe: PDFDelegateFailed `Impossibile trovare il file specificato.
' @ error/pdf.c/ReadPDFImage/797.
convert.exe: NoImagesDefined `logo.gif' @ error/convert.c/ConvertImageCommand/3241.
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My Version is :

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c:\imagemagick>convert -version
Version: ImageMagick 6.9.2-6 Q16 x64 2015-11-14 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Visual C++: 180040629
Features: Cipher DPC
Delegates (built-in): bzlib cairo freetype jng jp2 jpeg lcms lqr openexr pangocairo png ps rsvg tiff webp xml zlib
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Why ????

[fmw42]

It does not appear from you list of delegates that you have ghostscript installed (gs or gslib should be in the list). Can you verify that you have installed ghostscript and that IM knows where it is.

[tes]

Ok thank you: now work fine !