I have a laptop which I bought in England, just before I moved here. It is just over 3 years old, and has been working fine up till about a month ago. The it started freezing at the most inopportune time resulting in me turning it of at the mains. When restarting it sometimes takes 3 to 4 goes before it boots in. Does anyone know why, or does anyone know a good computer engineer who may be able to fix the problem.