My computer used to work fine. Then I installed DirectX and DirectVideo (something like that) to play games. And still it worked fine. Then one day, as I was working with Winword, suddenly, the screen changes colour (a lot of rubbish colour). After rebooting, it's ok. Then as I worked 1/2 way through WinWord, the system ran into some problem with the memory and had to reboot. After that the PC alternated between the memory or screen problem so I finally gave up and shut down. Weeks of unuse later, I tried to boot up. The hard disk runs for a short while and stays quiet. The screen remains blank. No matter how many times I tried, it's the same. It is not the monitor's problem as I tried it with another laptop.