Can you perform command without an error?
> java -XXaltjvm="C:\Program Files\Java\jre7\bin\client" -XshowSettings:all
or
> java -XXaltjvm="C:\Program Files\Java\jre7\bin\server" -XshowSettings:all
or
> java -XXaltjvm="C:\Program Files\Java\jdk1.7.0_45\jre\bin\client" -XshowSettings:all
or
> java -XXaltjvm="C:\Program Files\Java\jdk1.7.0_45\jre\bin\server" -XshowSettings:all
:?:
