..confirmed the hard drive is connected all the way?
Which operating system are you using?
Tried starting the computer into Safe Mode? If no safe mode, have you tried using the Recovery discs to reinstall the operating system and all software back to its factory condition?
How To Start In 'Safe Mode'
Hope this helps and let us know more.
Good day everyone my first post.
Last year I bought a E.SYSTEM EI 3103 Laptop I no it wasn't a very good thing to do as it was so cheap