A bit desperate for help here. I know nothing about computers apart from the fact that I use them for networking. I have had troubles this morning when it won't start up. After numerous attempts and unplugging and replugging in it started and went to a black screen: hardware disk configuration problem. I turned it off then on again and it went to a blue screen with a stop message, a lot of numbers and a win32k.sys address. My computer did not come with reboot disks and it is 4 years old. I did a defrag yesterday and it seemed fine. Please help....