After 10 days my Vaio was fully functioning again. The motherboard (basically the computer without the case nowadays) had to be replaced. I was very happy that my harddisk had not been erased, so after doing the regular updates on a Windows device (all kinds of virus, spyware and other updates) the MP5 is ready to roll again. Happy to have it back as together with the IBM T 41 and the Powerbook it is my happy mobile trio.