Hi Ricardo,
You can try these things
1) Try setting the value of the file as for the Xms as 512m in your hdbstudio.ini file, which will be present in your Studio installation location.
2) Check for the location of JAVA.EXE ( Kill any JAVAW.EXE in your task manager and restart the studio)
C:\Program Files\Java\jre7\bin\javaw.exe
--launcher.XXMaxPermSize
512m
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Xmx1024m
-Dfile.encoding=UTF-8
-Xms256m
-XX:MaxPermSize=512m
3) Chekc of the Jre path in the system environment variabled and if they are pointing to 32 bit or 64 bit Java installation
Regards
Rahul Jha