Let me start by telling you that I am quite dense when it comes to the world of computers. In the days of windows 3.1 I was quite in touch but over the last 10 years have got lost!! So go easy on any technical advice please! My laptop's power supply became faulty so instead of taking it to someone who knows what they are doing to fix it I tried to resolder it.....well skipping all the bits in the middle I had to get myself a new (identical) motherboard and have changed it over (something I have never done before). All is now working but the laptop now keeps crashing at all sort of times. If you boot up in safe mode then it will stay on but booting normally can crash at any time from before windows starts to once you are into windows. I have tried to search the threads that are here but a lot of it makes little sense to me! Hopefully you can help me first of all find out what is causing the laptop to crash and stay turned off. Yours hopefully.