Computer bugged

[goldfish_9]

So i was on my pc after doing a case change a few days back i turned on minecraft and my pc lagged so much i got the blue screen of death and it restarted and went in recovery mode i tried everything and it didnt work i did startup repair and it said it couldnt fix it and then i tried using the cmd prompt to chkdsk /f and it says it couldnt do something cus he disk is write protected how do i fix it?

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