OK i have 2 question on my 2 year old Sony Vaio VGN-NR120E pre installed with vista and on Saturday i opened my laptop and an era meg. saying operating system not found. i am not really sure what this mean and how it happend but if you caould help me and tell me what i can do to help it out also when i fix it i also would like to know how to switch from vista to xp bc i hate vista if you can help plz help me out thanks for all your help.
)

