When your computer cannot be accessed to the hard drive (drive c:): The skilled user will start to check from the following step by going to bios setup page:-
1. Scan hard drive's virus from CD rom drive. 2. Check the bad sectors in the hard drive by using scandisk. (a couple of hours process) 3. Diagnose the computer (a couple of hours) If the problem is from the hard drive device, then you have to change the new hard drive device. 4. If you have tried the above steps, but still cannot access the drive c drive, then you have to re-install the operating system (windows, linoux, etc., all data on the drive c. will be deleted).
In order to try the above steps, you have to go to bios setup page to change the bios setup to boot from cd rom drive (1st boot), and you must have the necessary software cds (virus, scandisk and diagnose checking software, etc.)
In Thailand, some computer repair service technicians do not try to check from the following steps as they take a lot of time and efforts which do not worth the cost of repair charge. Some technicians normally re-install the operating system, and do not inform the computer's owner in advance, which make all the data on the hard drive be deleted. Some technicians do not inform the computer's owner because of the language problem (they cannot speak other languages), so you have to back up your hard drive's data frequently to avoid this kind of problem.
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