I've noticed my Vaio has been running slowly lately. I found some system corruption using SFC SCAN and repaired it. Then I tested the HD using Seatools. The first time it failed the Short Self Test. I tried again, running the SMART check and then the Short Self Test again and it passed both. Would one failure indicate the drive is dying or could it have been a fluke? I am going to run a few more tests to try and get a better idea. Meanwhile, I'm wondering if someone could recommend a low priced replacement HDD compatible with my Vaio? Model number is: VGNFW590F3B. Thanks.