Hi Folks, I hope if you can help with answers. My friend gave me his DELL Inspiron 1501 laptop. He said he bought a new hard drive that matches as his old one that's worn out. But he bought one with bigger spaces, 500 GB hard drive for the DELL Insprion 1501. When he installed the new hard drive, and was ready to install Windows XP Home Edition, an error message first comes up before you do anything else. The error message says. "Error Operating System" I tried to installed Windows XP Home Edition for my friend, I got the CD ROM going, it says "Press any keys to boot CD". Then all the sudden, that same error message "Error operationing system" showed up again, before ready to install XP. So, can you tell me what's this error message mean for this DELL Inspiron 1501 laptop for my friend who bought a 500 GB hard drive??? He purchased it from "Amazon" and he found the exact same hard drive, accept it has bigger spaces. The one that he had and worn out was a 50 GB hard drive. Any boddy knows what's wrong here?? Thank you, Eugene