acer aspire s3-391..the drive has been locked in which windows was installed
hello everyone plz help me with my problem.I have acer aspire s3-391 and i don't know what has happened with it.It was working correctly but one night i turned it off and when i turned it on next morning it was not working means the window was not starting. I tried troubleshoot the problem but no effect. ONE answer i got from the laptop during the troubleshoot was that the drive in which windows in installed is locked. this happened twice to my laptop . F or the first time i got my PC checked my a computer shop. they simply just re installed the window. plz help me through my problem. plz do answer as soon as possible