This means repair is needed, and it sounds like you can't do that yourself.
A likely outcome is that a new hard disk is needed. It's quite well possible this also means that you need to reinstall Windows and all your applications and get all your data back from your backup.
Help! Having some troubles with my acer comp, when started the screen goes black and this message pops up 'A disk read error has occurred. Press ctrl alt delete to restart'
What does this mean? How can I fix it?