A systems friend installed a 250 GB HD on my Sony VAIO RS 220 -- in addition to the 120 GB HD that came with the puter. He moved my D Drive to the 250 GB and left the C Drive on the 120 GB. HD. System ran fine -- for about 3 months,. Then one day I heard what sounded like the HD (not good)-- but the noise was coming from the area of the Power module. The puter started to behave erratically-- when I turned it off normally, once I turned it back on, it would flip into a blue screen and then start up without my even pressing the ON button on the tower. So I did a CheckDisk on the C Drive -- and it found ALOT of bad sectors -- and supposedly fixed them. I tuirned off the puter and when I turned it on, I got a message:that said part of the Operating system (XP Home) was bad and needed to be reloaded. Once I turned off the computer, I was never able to turn it on again -- I would press the switch and...nothing. The person who originally loaded the 250 G HD is no longer interested in looking into this. He said "Well, it might be the power module". I have a dead puter, two telecommuting jobs that are going nowhere, and I need to get to the bottom of this. I could order a refurb and get a HD dock and try to load everything onto the new puter -- but what other options do I have???