The OP had bought a new Dell mobile computer which naturally came with Windows 10 pre-installed. She had installed the Hebrew language, but we discovered that all my Hebrew programs displayed Hebrew as a series of question marks.
After playing around for a bit, I discovered that Windows 10 can define a language for non-unicode programs, exactly in the same way that Windows XP does it. The only problem is finding that setting - as far as I remember, it's in Control Panel > languages > advanced.
Once I had changed this setting, all the programs displayed correctly.