Its about 2 day ago while i am working on steemit then suddenly my computer screen will change into blue screen and computer it begun to restart when its restart and convay following massage to me
"Non-system disk or disk error replace and strike any key when ready"
Then i am pretty shour about this massage comes from computer hard drive.
And also a click sound come from computer hard drive.
Then i open youtube and search about how to repair laptop hard disk .
Where i find that this problem is on computer hard drive platter.
This problem is accure due to some overload on system. After see a complete video on youtube i will be able to do some work by me.
I open my laptop slot where hard disk will locate.
Then after driving all screw. The hard drive is on my hand.
And i open hard drive and.where i see the platter will not spin. And it barring will struk.with the help of screw driver i try to move the platter from his head after put some force the platter will spin freely then i am shour my hard drive will work .after all this work. I fixed harddrive to its place and then ON my laptop.i am very happy to see my laptop will work thanks to youtube for more information see this video.
This is my porsnal experience do not try this with your computer.best regards from 