hii All I was woring on my acer laptop with A few windows open and loud music. Suddenly everything just become still and even i could not move the cursor. I tried ctrl+Alt+del but nothing happened. Situation continuid till 4 to 5 min and then finally sytem restarted by itself. Why this happened?? my system dual core processor 3 GB Ram 32 bit operating sytem 320 GB HDD i have purchased 1.5 yr back..