Your hard disk may get damaged or fault at any time. Any minor faults can easily by cure by Disk First Aid Tool Kit. But any major faults cannot be cured by any way. But you have to replace the hard disk
If your hard disk got damaged then at the time of turn on it can display “NO SYSTEM DISK IS FOUND” in DOS prompt.
It means CPU is unable search out the necessary system disk necessary for your PC. But it does not mean that if PC displays the above mentioned statement the hard disk is damaged. Sometimes this statement may also be displayed because of some errors in some DOS files. And it may also occur due to some problem RAM slot, power unit or motherboard. Also it may occur because of some improper cable connection (lose connection in SATA cable to confirm about actual fault of your computer you have to be a bit more careful.
Press the power button of your PC, put your ear near the system unit &try to hear the sound produced inside it.
In case of any major fault you will be able to hear some bad sounds like “tong-tong, tit-tit, or pip-pip”& also some bad sounds will keep on producing at regular intervals of time. If this happens you can conclude that it is a major problem.
If these do not take place then the problem is in some other areas. In such case open your system unit & check the connection cables to your hard disk reconnect in case of lose connections. & check if the RAM is correctly in its slot or not. & also check the power connections to the motherboard. If everything is all right put the cabinet &press the power button.
I hope your PC will work properly. If it does not there is surely some problem in mother board or HDD. In such cases the best thing you can do is connect your HDD to a good computer & check whether it is really faulty or not. If faulty then there is no alternative other than replacing it.
