OK heres what happened:
Last night, my Vista automatically downloaded an update and installed it. The update was Service Pack 1. It prompted me to reboot but I continued surfing the net and later just shut down the computer before I went to sleep. Before it shut down, it completed the installation (there was a message on the screen saying "Windows is updating your computer. Dont shut down").
This morning when I switched on my computer, Windows refused to start. It recommended inserting the Windows installation disk and re-starting and then choosing Repair Windows option. I did that and selected the repair startup option first but Vista still refused to boot. I then selected the recover system from a previous point (i.e. from before the update) and that didnt work either.
My system is only a year old so I dont think its a hardware problem and yes my Vista is a genuine copy.
Anyone can offer any help? Anyone else experienced this?