I have a laptop which works very well with windows 7. It has 4GB memeory and 650 GB Hard disk drive. It is Intel-based with core i7. I downloaded Ubuntu but every time I run ubuntu my laptop gets hot , slow and it is suddenly switched off interrupting my work. I do not know what is the exact problem but I thought the problem with the hardware. It might be not suitable for Ubuntu. I will buy another Laptop but I want to choose a good laptop that proved by experiments to be suitable to Ubuntu. I am here to ask for advice, recommend and your experience. Which Laptop, or desktop pc do you use? Have you ever faced the same problem I am facing now?