Hi,
On my VGN-FZ31S(Vista) I have been experiencing this for past few days...almost a month now..
When I press the power button, the Green LED lights up, the battery symbol also lights up and the Disk LED also... but after a second or two... Just the Power LED remains and others are off....
I then keep the power button pressed for few seconds and it switches off.... I then switch it on again and the Laptop boots up.... BUT the system date is set to 01/01/2005 !!!
Please advice me...