Sometimes my computer goes to a blue screen at startup with an error message asking me to CHKDSK /F. I tried opening it in safe mode but the same error occurs. In fact, the error always occurs in safe mode but only sometimes in normal startup. I did a diagnostic by pressing F12 at startup and then Diagnostic and there was stuff about checking errors, so I checked the hard drive for errors and it showed 2 in the read test and said a dell tech will know this. the errors occured in block 53241897 and 8?