>>>>>I said REFORMAT and reinstall
>>>>
>>>>You likely won't get anywhere reformatting either.
>>>
>>>
>>>why not?
>>
>>Because if you are getting a BSOD indicating a disk error, it most likely is a hardware error.
>then why is disk manager's chkdsk not fixing it (also it sais it found some error and fixed it)?

Some disk errors (actually a lot of disk failures) are not just bad sectors. Chkdsk can only map around bad sectors.