Freezing, weird noises and the blue screen of death, Is your PC gasping its last breath? Imagine spending hours on an important document or presentation, getting toward the end and then watching in horror as the computer seizes, the screen goes blue and the machine resets. with non-auto-saving programs that can be disastrous. Even if the consequences of a computer crash are rather mild - perhaps an error while u are looking at video of cats - its still rather annoying. So why do our computers crashes, and are there any steps you can take to ensure a trouble-free life in front of screen? here we are going to look at number of reasons why our machines decide to throw a wobbly.