Hello, ive had this sony vaio for about two years now and up untill now its been working great, im not a real computer person but i use it for school, all of a sudden my laptop started turning off on its own and as soon as it shuts of i hear a loud click. now it wont get passed the welcome screen. any clues as to what it might be or what i could to to make it better?
Two possibilities come to mind.
1: The laptop is overheating. A 2 year old lap top probably needs a thorough cleaning. Google your model and cleaning to find the proper procedure.
2: Bad laptop battery. You can test this, assuming your laptop can run without a battery, by removing the battery and trying it.
Both of these have happened on my Asus laptop.