It was useful though there is no fix or solution given. I have sony vaio with window 7. This morning when I started my laptop,in the Beginning itself I got a error msg "smart disk error press any key to continue" I press the key and system got started properly though took little more time. I went to All program> computer> right click >manage and saw that my c disk space was showing some error. I had run the troubleshoot and it got fixed. when we I restarted the system,again I got the same error msg such as " "smart disk error press any key to continue". could someone let me know if I can fix it or replacement is the only way ....