I have a Vaio Laptop VPCEB1S1E/BJ.... I live in Germany...
My Laptops has a problem. When i startup every morning, i see the switch button (green in color) light up , and i can hear the machine starting but no logo of Vaio appears neither does Bios. Within seconds, all of sudden it stops and light turns off. And from this on green light continues to only blink. After couple of attempts by pressing the button, the computer start up normally and show's windows has some error. (i choose start normally) the computer boot up normal and then whole of day I have no issue, even if i shutdown the computer for 4 to 6 hour during day.
I shutdown computer every night normally and installed the fresh Window 7 OS several time to check if that's the reason, I have also reinserted the CMOS battery cable.