Having problems with your Sony VAIO VGN-FS640W Notebook ?
VGN-FS640W - Three green LED's come on but no boot up.
\015 VGN-FS640W - Three green LED's come on and hard drive spins up but no VAIO screen or further activity. Eventually the HD access light goes out. There is one click that sounds like the DVD searching for media. Replaced the motherboard with no change in behaivior. I did get a full boot sequence on one occasion, but the next time, no luck. A few times it got to the VAIO screen before it locked up.\015\012Any help would be appreciated.\015
Your hardrive is going bad cannot read the disk.take hardrive out and tap it slightly? then replace see if it makes a difference..
Repair Help & Product Troubleshooting for Sony VAIO VGN-FS640W Notebook
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