i turned on my computer and it read "disk read error occurred". turned it off and same thing happened. Ran a diagnostics test and it said "DST- short status test failed. Error code 1000-0142, 1000-0146." msg:Unit 2: DST Log contains previous errors". ran a different test and it said to contact Dell with error code 0F00:0244. Msg Block 189224, uncorrected data error or media is write protected". what should i do?